1320520432 has 60 divisors (see below), whose sum is σ = 3214026928. Its totient is φ = 514483200.

The previous prime is 1320520393. The next prime is 1320520457. The reversal of 1320520432 is 2340250231.

It is a super-2 number, since 2×1320520432² = 3487548422658933248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35169 + ... + 62272.

Almost surely, 2^1320520432 is an apocalyptic number.

It is an amenable number.

1320520432 is an abundant number, since it is smaller than the sum of its proper divisors (1893506496).

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

1320520432 is a wasteful number, since it uses less digits than its factorization.

1320520432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97478 (or 97461 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1320520432 is about 36338.9657530316. The cubic root of 1320520432 is about 1097.1054566373.

Adding to 1320520432 its reverse (2340250231), we get a palindrome (3660770663).

The spelling of 1320520432 in words is "one billion, three hundred twenty million, five hundred twenty thousand, four hundred thirty-two".