1321572882 has 32 divisors (see below), whose sum is σ = 3102383232. Its totient is φ = 367386624.

The previous prime is 1321572859. The next prime is 1321572887. The reversal of 1321572882 is 2882751231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321572882.

It is not an unprimeable number, because it can be changed into a prime (1321572887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423663 + ... + 426770.

It is an arithmetic number, because the mean of its divisors is an integer number (96949476).

Almost surely, 2^1321572882 is an apocalyptic number.

1321572882 is an abundant number, since it is smaller than the sum of its proper divisors (1780810350).

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

1321572882 is a wasteful number, since it uses less digits than its factorization.

1321572882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850482.

The product of its digits is 53760, while the sum is 39.

The square root of 1321572882 is about 36353.4438808760. The cubic root of 1321572882 is about 1097.3968422646.

The spelling of 1321572882 in words is "one billion, three hundred twenty-one million, five hundred seventy-two thousand, eight hundred eighty-two".