391485120 has 336 divisors, whose sum is σ = 1427927040. Its totient is φ = 90574848.

The previous prime is 391485103. The next prime is 391485121. The reversal of 391485120 is 21584193.

It is not an unprimeable number, because it can be changed into a prime (391485121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3082497 + ... + 3082623.

Almost surely, 2^391485120 is an apocalyptic number.

391485120 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 391485120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713963520).

391485120 is an abundant number, since it is smaller than the sum of its proper divisors (1036441920).

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

391485120 is a wasteful number, since it uses less digits than its factorization.

391485120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 391485120 is about 19785.9829172068. The cubic root of 391485120 is about 731.5405758770.

The spelling of 391485120 in words is "three hundred ninety-one million, four hundred eighty-five thousand, one hundred twenty".