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13032405458 = 28929072
BaseRepresentation
bin11000010001100101…
…01011100111010010
31020122020202210101122
430020302223213102
5203142243433313
65553105402242
7640645422122
oct141062534722
936566683348
1013032405458
1155884a9126
122638639382
1312c9009827
148b8ba2c82
15514203708
hex308cab9d2

13032405458 has 18 divisors (see below), whose sum is σ = 19792545381. Its totient is φ = 6435883344.

The previous prime is 13032405457. The next prime is 13032405461. The reversal of 13032405458 is 85450423031.

It can be written as a sum of positive squares in 2 ways, for example, as 11649532489 + 1382872969 = 107933^2 + 37187^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=80723.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13032405457) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14368241 + ... + 14369147.

Almost surely, 213032405458 is an apocalyptic number.

13032405458 is a deficient number, since it is larger than the sum of its proper divisors (6760139923).

13032405458 is an frugal number, since it uses more digits than its factorization.

13032405458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 13032405458 its reverse (85450423031), we get a palindrome (98482828489).

The spelling of 13032405458 in words is "thirteen billion, thirty-two million, four hundred five thousand, four hundred fifty-eight".

Divisors: 1 2 89 178 907 1814 7921 15842 80723 161446 822649 1645298 7184347 14368694 73215761 146431522 6516202729 13032405458