387878432 has 24 divisors (see below), whose sum is σ = 764796816. Its totient is φ = 193644352.

The previous prime is 387878431. The next prime is 387878453. The reversal of 387878432 is 234878783.

Its product of digits (1806336) is a multiple of the sum of its prime divisors (18432).

It is not an unprimeable number, because it can be changed into a prime (387878431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12983 + ... + 30729.

It is an arithmetic number, because the mean of its divisors is an integer number (31866534).

Almost surely, 2^387878432 is an apocalyptic number.

387878432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

387878432 is a deficient number, since it is larger than the sum of its proper divisors (376918384).

387878432 is a wasteful number, since it uses less digits than its factorization.

387878432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18440 (or 18432 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The square root of 387878432 is about 19694.6295217757. The cubic root of 387878432 is about 729.2871204167.

The spelling of 387878432 in words is "three hundred eighty-seven million, eight hundred seventy-eight thousand, four hundred thirty-two".