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1301214020 = 225149436649
BaseRepresentation
bin100110110001110…
…1111001101000100
310100200110112001212
41031203233031010
510131102322040
6333041310552
744150064611
oct11543571504
93320415055
101301214020
11608557397
12303935458
13179771732
14c4b59508
157937ed65
hex4d8ef344

1301214020 has 24 divisors (see below), whose sum is σ = 2750895000. Its totient is φ = 516991232.

The previous prime is 1301214011. The next prime is 1301214041. The reversal of 1301214020 is 204121031.

It can be written as a sum of positive squares in 4 ways, for example, as 68923204 + 1232290816 = 8302^2 + 35104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1301213986 and 1301214004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215345 + ... + 221304.

It is an arithmetic number, because the mean of its divisors is an integer number (114620625).

Almost surely, 21301214020 is an apocalyptic number.

1301214020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301214020 is an abundant number, since it is smaller than the sum of its proper divisors (1449680980).

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

1301214020 is a wasteful number, since it uses less digits than its factorization.

1301214020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436807 (or 436805 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1301214020 is about 36072.3442542899. The cubic root of 1301214020 is about 1091.7325139726.

Adding to 1301214020 its reverse (204121031), we get a palindrome (1505335051).

The spelling of 1301214020 in words is "one billion, three hundred one million, two hundred fourteen thousand, twenty".

Divisors: 1 2 4 5 10 20 149 298 596 745 1490 2980 436649 873298 1746596 2183245 4366490 8732980 65060701 130121402 260242804 325303505 650607010 1301214020