38931028 has 6 divisors (see below), whose sum is σ = 68129306. Its totient is φ = 19465512.

The previous prime is 38931023. The next prime is 38931029. The reversal of 38931028 is 82013983.

It can be written as a sum of positive squares in only one way, i.e., 36626704 + 2304324 = 6052^2 + 1518^2 .

It is a super-2 number, since 2×38931028² = 3031249882273568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38930984 and 38931002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38931023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4866375 + ... + 4866382.

Almost surely, 2^38931028 is an apocalyptic number.

It is an amenable number.

38931028 is a deficient number, since it is larger than the sum of its proper divisors (29198278).

38931028 is a wasteful number, since it uses less digits than its factorization.

38931028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732761 (or 9732759 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 38931028 is about 6239.4733752136. The cubic root of 38931028 is about 338.9211129719.

It can be divided in two parts, 3893 and 1028, that multiplied together give a palindrome (4002004).

The spelling of 38931028 in words is "thirty-eight million, nine hundred thirty-one thousand, twenty-eight".