387995580 has 216 divisors, whose sum is σ = 1421233632. Its totient is φ = 83918592.

The previous prime is 387995537. The next prime is 387995633. The reversal of 387995580 is 85599783.

387995580 is a `hidden beast` number, since 3 + 87 + 9 + 9 + 558 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 454434 + ... + 455286.

Almost surely, 2^387995580 is an apocalyptic number.

387995580 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387995580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710616816).

387995580 is an abundant number, since it is smaller than the sum of its proper divisors (1033238052).

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

387995580 is a wasteful number, since it uses less digits than its factorization.

387995580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 387995580 is about 19697.6034075214. The cubic root of 387995580 is about 729.3605333909.

The spelling of 387995580 in words is "three hundred eighty-seven million, nine hundred ninety-five thousand, five hundred eighty".