387394520 has 32 divisors (see below), whose sum is σ = 909537120. Its totient is φ = 148220160.

The previous prime is 387394519. The next prime is 387394541. The reversal of 387394520 is 25493783.

It is a congruent number.

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, 209621 + ... + 211460.

It is an arithmetic number, because the mean of its divisors is an integer number (28423035).

Almost surely, 2^387394520 is an apocalyptic number.

It is an amenable number.

387394520 is an abundant number, since it is smaller than the sum of its proper divisors (522142600).

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

387394520 is a wasteful number, since it uses less digits than its factorization.

387394520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421115 (or 421111 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 387394520 is about 19682.3403080020. The cubic root of 387394520 is about 728.9837112177.

The spelling of 387394520 in words is "three hundred eighty-seven million, three hundred ninety-four thousand, five hundred twenty".