387189072 has 50 divisors (see below), whose sum is σ = 1120641258. Its totient is φ = 129062592.

The previous prime is 387189067. The next prime is 387189113. The reversal of 387189072 is 270981783.

It can be written as a sum of positive squares in only one way, i.e., 338412816 + 48776256 = 18396^2 + 6984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 148083 + ... + 150674.

Almost surely, 2^387189072 is an apocalyptic number.

It is an amenable number.

387189072 is an abundant number, since it is smaller than the sum of its proper divisors (733452186).

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

387189072 is a wasteful number, since it uses less digits than its factorization.

387189072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298777 (or 298762 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 387189072 is about 19677.1205210519. The cubic root of 387189072 is about 728.8548204520.

The spelling of 387189072 in words is "three hundred eighty-seven million, one hundred eighty-nine thousand, seventy-two".