38728492 has 24 divisors (see below), whose sum is σ = 75937680. Its totient is φ = 17127360.

The previous prime is 38728457. The next prime is 38728493. The reversal of 38728492 is 29482783.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38728493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10267 + ... + 13522.

It is an arithmetic number, because the mean of its divisors is an integer number (3164070).

Almost surely, 2^38728492 is an apocalyptic number.

It is an amenable number.

38728492 is a deficient number, since it is larger than the sum of its proper divisors (37209188).

38728492 is a wasteful number, since it uses less digits than its factorization.

38728492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23841 (or 23839 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 38728492 is about 6223.2219950762. The cubic root of 38728492 is about 338.3323528543.

The spelling of 38728492 in words is "thirty-eight million, seven hundred twenty-eight thousand, four hundred ninety-two".