384657072 has 20 divisors (see below), whose sum is σ = 993697560. Its totient is φ = 128219008.

The previous prime is 384657067. The next prime is 384657149. The reversal of 384657072 is 270756483.

It is a super-2 number, since 2×384657072² = 295922126079226368, which contains 22 as substring.

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, 4006797 + ... + 4006892.

It is an arithmetic number, because the mean of its divisors is an integer number (49684878).

Almost surely, 2^384657072 is an apocalyptic number.

It is an amenable number.

384657072 is an abundant number, since it is smaller than the sum of its proper divisors (609040488).

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

384657072 is a wasteful number, since it uses less digits than its factorization.

384657072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8013700 (or 8013694 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 384657072 is about 19612.6763089590. The cubic root of 384657072 is about 727.2625769568.

The spelling of 384657072 in words is "three hundred eighty-four million, six hundred fifty-seven thousand, seventy-two".