38407828 has 24 divisors (see below), whose sum is σ = 72517032. Its totient is φ = 17731584.

The previous prime is 38407823. The next prime is 38407841. The reversal of 38407828 is 82870483.

It can be written as a sum of positive squares in 4 ways, for example, as 5253264 + 33154564 = 2292^2 + 5758^2 .

It is a super-2 number, since 2×38407828² = 2950322503355168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38407823) 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, 1725 + ... + 8932.

It is an arithmetic number, because the mean of its divisors is an integer number (3021543).

Almost surely, 2^38407828 is an apocalyptic number.

It is an amenable number.

38407828 is a deficient number, since it is larger than the sum of its proper divisors (34109204).

38407828 is a wasteful number, since it uses less digits than its factorization.

38407828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10731 (or 10729 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 38407828 is about 6197.4049407796. The cubic root of 38407828 is about 337.3959895315.

The spelling of 38407828 in words is "thirty-eight million, four hundred seven thousand, eight hundred twenty-eight".