1320232032 has 72 divisors (see below), whose sum is σ = 4290760656. Its totient is φ = 377208576.

The previous prime is 1320232031. The next prime is 1320232037. The reversal of 1320232032 is 2302320231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1320231996 and 1320232014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320232031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325423 + ... + 329454.

It is an arithmetic number, because the mean of its divisors is an integer number (59593898).

Almost surely, 2^1320232032 is an apocalyptic number.

1320232032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320232032 is an abundant number, since it is smaller than the sum of its proper divisors (2970528624).

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

1320232032 is a wasteful number, since it uses less digits than its factorization.

1320232032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654900 (or 654889 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1320232032 is about 36334.9973441584. The cubic root of 1320232032 is about 1097.0255820053.

Adding to 1320232032 its reverse (2302320231), we get a palindrome (3622552263).

The spelling of 1320232032 in words is "one billion, three hundred twenty million, two hundred thirty-two thousand, thirty-two".