38817438 has 32 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 11732160.

The previous prime is 38817413. The next prime is 38817461. The reversal of 38817438 is 83471883.

It is a self number, because there is not a number n which added to its sum of digits gives 38817438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47578 + ... + 48386.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^38817438 is an apocalyptic number.

38817438 is an abundant number, since it is smaller than the sum of its proper divisors (46096482).

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

38817438 is a wasteful number, since it uses less digits than its factorization.

38817438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its digits is 129024, while the sum is 42.

The square root of 38817438 is about 6230.3641948124. The cubic root of 38817438 is about 338.5911657615.

The spelling of 38817438 in words is "thirty-eight million, eight hundred seventeen thousand, four hundred thirty-eight".