387790872 has 32 divisors (see below), whose sum is σ = 1107974400. Its totient is φ = 110797344.

The previous prime is 387790861. The next prime is 387790883. The reversal of 387790872 is 278097783.

It is an interprime number because it is at equal distance from previous prime (387790861) and next prime (387790883).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1153972 + ... + 1154307.

It is an arithmetic number, because the mean of its divisors is an integer number (34624200).

Almost surely, 2^387790872 is an apocalyptic number.

It is an amenable number.

387790872 is an abundant number, since it is smaller than the sum of its proper divisors (720183528).

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

387790872 is a wasteful number, since it uses less digits than its factorization.

387790872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308295 (or 2308291 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 51.

The square root of 387790872 is about 19692.4064552812. The cubic root of 387790872 is about 729.2322396598.

It can be divided in two parts, 3877 and 90872, that added together give a palindrome (94749).

The spelling of 387790872 in words is "three hundred eighty-seven million, seven hundred ninety thousand, eight hundred seventy-two".