391200480 has 144 divisors (see below), whose sum is σ = 1456391664. Its totient is φ = 94832640.

The previous prime is 391200457. The next prime is 391200487. The reversal of 391200480 is 84002193.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391200487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3492 + ... + 28188.

It is an arithmetic number, because the mean of its divisors is an integer number (10113831).

Almost surely, 2^391200480 is an apocalyptic number.

391200480 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 391200480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728195832).

391200480 is an abundant number, since it is smaller than the sum of its proper divisors (1065191184).

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

391200480 is a wasteful number, since it uses less digits than its factorization.

391200480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24729 (or 24718 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 391200480 is about 19778.7886383368. The cubic root of 391200480 is about 731.3632373400.

The spelling of 391200480 in words is "three hundred ninety-one million, two hundred thousand, four hundred eighty".