387995670 has 128 divisors (see below), whose sum is σ = 1063428480. Its totient is φ = 101896704.

The previous prime is 387995651. The next prime is 387995683. The reversal of 387995670 is 76599783.

387995670 is a `hidden beast` number, since 3 + 8 + 79 + 9 + 567 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2471232 + ... + 2471388.

It is an arithmetic number, because the mean of its divisors is an integer number (8308035).

Almost surely, 2^387995670 is an apocalyptic number.

387995670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 387995670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531714240).

387995670 is an abundant number, since it is smaller than the sum of its proper divisors (675432810).

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

387995670 is a wasteful number, since it uses less digits than its factorization.

387995670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 387995670 is about 19697.6056920632. The cubic root of 387995670 is about 729.3605897854.

The spelling of 387995670 in words is "three hundred eighty-seven million, nine hundred ninety-five thousand, six hundred seventy".