387490320 has 120 divisors (see below), whose sum is σ = 1487244096. Its totient is φ = 88568064.

The previous prime is 387490309. The next prime is 387490331. The reversal of 387490320 is 23094783.

It is an interprime number because it is at equal distance from previous prime (387490309) and next prime (387490331).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33402 + ... + 43481.

Almost surely, 2^387490320 is an apocalyptic number.

387490320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387490320 is an abundant number, since it is smaller than the sum of its proper divisors (1099753776).

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

387490320 is a wasteful number, since it uses less digits than its factorization.

387490320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76909 (or 76900 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 387490320 is about 19684.7738112481. The cubic root of 387490320 is about 729.0437971508.

The spelling of 387490320 in words is "three hundred eighty-seven million, four hundred ninety thousand, three hundred twenty".