38445920 has 24 divisors (see below), whose sum is σ = 90828864. Its totient is φ = 15378304.

The previous prime is 38445907. The next prime is 38445973. The reversal of 38445920 is 2954483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119984 + ... + 120303.

It is an arithmetic number, because the mean of its divisors is an integer number (3784536).

Almost surely, 2^38445920 is an apocalyptic number.

It is an amenable number.

38445920 is an abundant number, since it is smaller than the sum of its proper divisors (52382944).

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

38445920 is a wasteful number, since it uses less digits than its factorization.

38445920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240302 (or 240294 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 38445920 is about 6200.4774009749. The cubic root of 38445920 is about 337.5074932035.

The spelling of 38445920 in words is "thirty-eight million, four hundred forty-five thousand, nine hundred twenty".