38843904 has 160 divisors (see below), whose sum is σ = 119813760. Its totient is φ = 11151360.

The previous prime is 38843897. The next prime is 38843947. The reversal of 38843904 is 40934883.

It is a super-2 number, since 2×38843904² = 3017697755922432, which contains 22 as substring.

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, 2044407 + ... + 2044425.

It is an arithmetic number, because the mean of its divisors is an integer number (748836).

Almost surely, 2^38843904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38843904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59906880).

38843904 is an abundant number, since it is smaller than the sum of its proper divisors (80969856).

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

38843904 is an equidigital number, since it uses as much as digits as its factorization.

38843904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 38843904 is about 6232.4877857883. The cubic root of 38843904 is about 338.6680995524.

The spelling of 38843904 in words is "thirty-eight million, eight hundred forty-three thousand, nine hundred four".