38621408 has 36 divisors (see below), whose sum is σ = 88453512. Its totient is φ = 16551360.

The previous prime is 38621389. The next prime is 38621431. The reversal of 38621408 is 80412683.

It is a super-2 number, since 2×38621408² = 2983226311804928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10748 + ... + 13883.

It is an arithmetic number, because the mean of its divisors is an integer number (2457042).

Almost surely, 2^38621408 is an apocalyptic number.

It is an amenable number.

38621408 is an abundant number, since it is smaller than the sum of its proper divisors (49832104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38621408 is a wasteful number, since it uses less digits than its factorization.

38621408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24655 (or 24640 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 38621408 is about 6214.6124577483. The cubic root of 38621408 is about 338.0202361751.

The spelling of 38621408 in words is "thirty-eight million, six hundred twenty-one thousand, four hundred eight".