388224865 has 16 divisors (see below), whose sum is σ = 533081088. Its totient is φ = 265882176.

The previous prime is 388224847. The next prime is 388224871. The reversal of 388224865 is 568422883.

It is not a de Polignac number, because 388224865 - 2²⁷ = 254007137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23779 + ... + 36631.

It is an arithmetic number, because the mean of its divisors is an integer number (33317568).

Almost surely, 2^388224865 is an apocalyptic number.

388224865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388224865 is a deficient number, since it is larger than the sum of its proper divisors (144856223).

388224865 is a wasteful number, since it uses less digits than its factorization.

388224865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13728.

The product of its digits is 737280, while the sum is 46.

The square root of 388224865 is about 19703.4226722161. The cubic root of 388224865 is about 729.5041763495.

The spelling of 388224865 in words is "three hundred eighty-eight million, two hundred twenty-four thousand, eight hundred sixty-five".