38247920 has 20 divisors (see below), whose sum is σ = 88926600. Its totient is φ = 15299136.

The previous prime is 38247889. The next prime is 38247949. The reversal of 38247920 is 2974283.

It is a tau number, because it is divible by the number of its divisors (20).

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, 238970 + ... + 239129.

It is an arithmetic number, because the mean of its divisors is an integer number (4446330).

Almost surely, 2^38247920 is an apocalyptic number.

It is an amenable number.

38247920 is an abundant number, since it is smaller than the sum of its proper divisors (50678680).

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

38247920 is a wasteful number, since it uses less digits than its factorization.

38247920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478112 (or 478106 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 38247920 is about 6184.4902781070. The cubic root of 38247920 is about 336.9270975564.

The spelling of 38247920 in words is "thirty-eight million, two hundred forty-seven thousand, nine hundred twenty".