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2051241320 = 235791016427
BaseRepresentation
bin111101001000011…
…0111010101101000
312021221202212002202
41322100313111220
513200104210240
6535313115332
7101555156252
oct17220672550
95257685082
102051241320
11962965a67
12492b58b48
13268c7877b
141565d6cd2
15c0135315
hex7a437568

2051241320 has 64 divisors (see below), whose sum is σ = 4720723200. Its totient is φ = 801964800.

The previous prime is 2051241317. The next prime is 2051241323. The reversal of 2051241320 is 231421502.

It is an interprime number because it is at equal distance from previous prime (2051241317) and next prime (2051241323).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2051241292 and 2051241301.

It is not an unprimeable number, because it can be changed into a prime (2051241323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315947 + ... + 322373.

It is an arithmetic number, because the mean of its divisors is an integer number (73761300).

Almost surely, 22051241320 is an apocalyptic number.

2051241320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051241320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360361600).

2051241320 is an abundant number, since it is smaller than the sum of its proper divisors (2669481880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051241320 is a wasteful number, since it uses less digits than its factorization.

2051241320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618 (or 6614 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2051241320 is about 45290.6317023731. The cubic root of 2051241320 is about 1270.5904460964.

Adding to 2051241320 its reverse (231421502), we get a palindrome (2282662822).

The spelling of 2051241320 in words is "two billion, fifty-one million, two hundred forty-one thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 79 101 158 202 316 395 404 505 632 790 808 1010 1580 2020 3160 4040 6427 7979 12854 15958 25708 31916 32135 39895 51416 63832 64270 79790 128540 159580 257080 319160 507733 649127 1015466 1298254 2030932 2538665 2596508 3245635 4061864 5077330 5193016 6491270 10154660 12982540 20309320 25965080 51281033 102562066 205124132 256405165 410248264 512810330 1025620660 2051241320