38131238 has 24 divisors (see below), whose sum is σ = 62436432. Its totient is φ = 17449344.

The previous prime is 38131231. The next prime is 38131253. The reversal of 38131238 is 83213183.

It is a super-2 number, since 2×38131238² = 2907982622825288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38131238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38131231) 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, 20495 + ... + 22277.

It is an arithmetic number, because the mean of its divisors is an integer number (2601518).

Almost surely, 2^38131238 is an apocalyptic number.

38131238 is a deficient number, since it is larger than the sum of its proper divisors (24305194).

38131238 is a wasteful number, since it uses less digits than its factorization.

38131238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1839 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 38131238 is about 6175.0496354280. The cubic root of 38131238 is about 336.5841301228.

The spelling of 38131238 in words is "thirty-eight million, one hundred thirty-one thousand, two hundred thirty-eight".