38218720 has 48 divisors (see below), whose sum is σ = 95609808. Its totient is φ = 14387200.

The previous prime is 38218717. The next prime is 38218751. The reversal of 38218720 is 2781283.

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, 4306 + ... + 9745.

It is an arithmetic number, because the mean of its divisors is an integer number (1991871).

Almost surely, 2^38218720 is an apocalyptic number.

It is an amenable number.

38218720 is an abundant number, since it is smaller than the sum of its proper divisors (57391088).

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

38218720 is a wasteful number, since it uses less digits than its factorization.

38218720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14083 (or 14075 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 38218720 is about 6182.1290830910. The cubic root of 38218720 is about 336.8413344966.

The spelling of 38218720 in words is "thirty-eight million, two hundred eighteen thousand, seven hundred twenty".