387289772 has 24 divisors (see below), whose sum is σ = 695241792. Its totient is φ = 188662400.

The previous prime is 387289769. The next prime is 387289807. The reversal of 387289772 is 277982783.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179822 + ... + 181962.

It is an arithmetic number, because the mean of its divisors is an integer number (28968408).

Almost surely, 2^387289772 is an apocalyptic number.

It is an amenable number.

387289772 is a deficient number, since it is larger than the sum of its proper divisors (307952020).

387289772 is a wasteful number, since it uses less digits than its factorization.

387289772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3287 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 53.

The square root of 387289772 is about 19679.6791640514. The cubic root of 387289772 is about 728.9180017448.

The spelling of 387289772 in words is "three hundred eighty-seven million, two hundred eighty-nine thousand, seven hundred seventy-two".