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2133104020 = 225375934861
BaseRepresentation
bin111111100100100…
…1001010110010100
312111122210220121121
41333021021112110
513332033312040
6551355453324
7103601041105
oct17711112624
95448726547
102133104020
119a5099693
124b6457244
1327cc0b938
141634263ac
15c7405c4a
hex7f249594

2133104020 has 48 divisors (see below), whose sum is σ = 4609292688. Its totient is φ = 828610560.

The previous prime is 2133104009. The next prime is 2133104081. The reversal of 2133104020 is 204013312.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 426092164 + 1707011856 = 20642^2 + 41316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2133103985 and 2133104003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436390 + ... + 441250.

It is an arithmetic number, because the mean of its divisors is an integer number (96026931).

Almost surely, 22133104020 is an apocalyptic number.

2133104020 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 2133104020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304646344).

2133104020 is an abundant number, since it is smaller than the sum of its proper divisors (2476188668).

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

2133104020 is a wasteful number, since it uses less digits than its factorization.

2133104020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5498 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2133104020 is about 46185.5390788069. The cubic root of 2133104020 is about 1287.2730529070.

Adding to 2133104020 its reverse (204013312), we get a palindrome (2337117332).

The spelling of 2133104020 in words is "two billion, one hundred thirty-three million, one hundred four thousand, twenty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 593 740 1186 2372 2965 4861 5930 9722 11860 19444 21941 24305 43882 48610 87764 97220 109705 179857 219410 359714 438820 719428 899285 1798570 2882573 3597140 5765146 11530292 14412865 28825730 57651460 106655201 213310402 426620804 533276005 1066552010 2133104020