13457538 has 24 divisors (see below), whose sum is σ = 29837808. Its totient is φ = 4381272.

The previous prime is 13457533. The next prime is 13457551. The reversal of 13457538 is 83575431.

It is a super-2 number, since 2×13457538² = 362210658042888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13457533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7920 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (1243242).

Almost surely, 2^13457538 is an apocalyptic number.

13457538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13457538 is an abundant number, since it is smaller than the sum of its proper divisors (16380270).

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

13457538 is a wasteful number, since it uses less digits than its factorization.

13457538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17438 (or 17435 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 13457538 is about 3668.4517170054. The cubic root of 13457538 is about 237.8602503256.

The spelling of 13457538 in words is "thirteen million, four hundred fifty-seven thousand, five hundred thirty-eight".