38944380 has 24 divisors (see below), whose sum is σ = 109044432. Its totient is φ = 10385152.

The previous prime is 38944379. The next prime is 38944391. The reversal of 38944380 is 8344983.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324477 + ... + 324596.

It is an arithmetic number, because the mean of its divisors is an integer number (4543518).

Almost surely, 2^38944380 is an apocalyptic number.

38944380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38944380 is an abundant number, since it is smaller than the sum of its proper divisors (70100052).

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

38944380 is a wasteful number, since it uses less digits than its factorization.

38944380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649085 (or 649083 counting only the distinct ones).

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

The square root of 38944380 is about 6240.5432455837. The cubic root of 38944380 is about 338.9598546277.

It can be divided in two parts, 3894 and 4380, that multiplied together give a triangular number (17055720 = T₅₈₄₀).

The spelling of 38944380 in words is "thirty-eight million, nine hundred forty-four thousand, three hundred eighty".