38994720 has 48 divisors (see below), whose sum is σ = 122834880. Its totient is φ = 10398464.

The previous prime is 38994701. The next prime is 38994749. The reversal of 38994720 is 2749983.

It is a tau number, because it is divible by the number of its divisors (48).

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, 40140 + ... + 41099.

It is an arithmetic number, because the mean of its divisors is an integer number (2559060).

Almost surely, 2^38994720 is an apocalyptic number.

38994720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38994720 is an abundant number, since it is smaller than the sum of its proper divisors (83840160).

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

38994720 is a wasteful number, since it uses less digits than its factorization.

38994720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81257 (or 81249 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 38994720 is about 6244.5752457633. The cubic root of 38994720 is about 339.1058396822.

The spelling of 38994720 in words is "thirty-eight million, nine hundred ninety-four thousand, seven hundred twenty".