38731388 has 12 divisors (see below), whose sum is σ = 69433392. Its totient is φ = 18893280.

The previous prime is 38731373. The next prime is 38731397. The reversal of 38731388 is 88313783.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117920 + ... + 118247.

It is an arithmetic number, because the mean of its divisors is an integer number (5786116).

Almost surely, 2^38731388 is an apocalyptic number.

It is an amenable number.

38731388 is a deficient number, since it is larger than the sum of its proper divisors (30702004).

38731388 is a wasteful number, since it uses less digits than its factorization.

38731388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236212 (or 236210 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 38731388 is about 6223.4546676263. The cubic root of 38731388 is about 338.3407858022.

The spelling of 38731388 in words is "thirty-eight million, seven hundred thirty-one thousand, three hundred eighty-eight".