384497872 has 20 divisors (see below), whose sum is σ = 812689056. Its totient is φ = 174771680.

The previous prime is 384497833. The next prime is 384497879. The reversal of 384497872 is 278794483.

It is a super-2 number, since 2×384497872² = 295677227145056768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384497879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092148 + ... + 1092499.

Almost surely, 2^384497872 is an apocalyptic number.

It is an amenable number.

384497872 is an abundant number, since it is smaller than the sum of its proper divisors (428191184).

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

384497872 is a wasteful number, since it uses less digits than its factorization.

384497872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184666 (or 2184660 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 52.

The square root of 384497872 is about 19608.6172893450. The cubic root of 384497872 is about 727.1622311448.

The spelling of 384497872 in words is "three hundred eighty-four million, four hundred ninety-seven thousand, eight hundred seventy-two".