13747538 has 12 divisors (see below), whose sum is σ = 23988222. Its totient is φ = 5891760.

The previous prime is 13747499. The next prime is 13747541. The reversal of 13747538 is 83574731.

It can be written as a sum of positive squares in only one way, i.e., 9878449 + 3869089 = 3143^2 + 1967^2 .

It is a super-2 number, since 2×13747538² = 377989602122888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70043 + ... + 70238.

Almost surely, 2^13747538 is an apocalyptic number.

13747538 is a deficient number, since it is larger than the sum of its proper divisors (10240684).

13747538 is a wasteful number, since it uses less digits than its factorization.

13747538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140297 (or 140290 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 13747538 is about 3707.7672526738. The cubic root of 13747538 is about 239.5566932412.

The spelling of 13747538 in words is "thirteen million, seven hundred forty-seven thousand, five hundred thirty-eight".