38985531 has 16 divisors (see below), whose sum is σ = 57494304. Its totient is φ = 23341824.

The previous prime is 38985523. The next prime is 38985553. The reversal of 38985531 is 13558983.

It is not a de Polignac number, because 38985531 - 2³ = 38985523 is a prime.

It is a super-2 number, since 2×38985531² = 3039743254703922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38915531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12066 + ... + 14951.

It is an arithmetic number, because the mean of its divisors is an integer number (3593394).

Almost surely, 2^38985531 is an apocalyptic number.

38985531 is a deficient number, since it is larger than the sum of its proper divisors (18508773).

38985531 is a wasteful number, since it uses less digits than its factorization.

38985531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27070.

The product of its digits is 129600, while the sum is 42.

The square root of 38985531 is about 6243.8394438038. The cubic root of 38985531 is about 339.0792011325.

The spelling of 38985531 in words is "thirty-eight million, nine hundred eighty-five thousand, five hundred thirty-one".