391482120 has 64 divisors (see below), whose sum is σ = 1243537920. Its totient is φ = 98253824.

The previous prime is 391482109. The next prime is 391482127. The reversal of 391482120 is 21284193.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (391482127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93912 + ... + 97991.

It is an arithmetic number, because the mean of its divisors is an integer number (19430280).

Almost surely, 2^391482120 is an apocalyptic number.

391482120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

391482120 is an abundant number, since it is smaller than the sum of its proper divisors (852055800).

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

391482120 is a wasteful number, since it uses less digits than its factorization.

391482120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191934 (or 191930 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 391482120 is about 19785.9071058165. The cubic root of 391482120 is about 731.5387072429.

The spelling of 391482120 in words is "three hundred ninety-one million, four hundred eighty-two thousand, one hundred twenty".