1321422888 has 64 divisors (see below), whose sum is σ = 3356640000. Its totient is φ = 433435392.

The previous prime is 1321422877. The next prime is 1321422889. The reversal of 1321422888 is 8882241231.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1321422889) 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, 660706 + ... + 662702.

It is an arithmetic number, because the mean of its divisors is an integer number (52447500).

Almost surely, 2^1321422888 is an apocalyptic number.

It is an amenable number.

1321422888 is an abundant number, since it is smaller than the sum of its proper divisors (2035217112).

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

1321422888 is a wasteful number, since it uses less digits than its factorization.

1321422888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2430 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 1321422888 is about 36351.3808265931. The cubic root of 1321422888 is about 1097.3553237650.

The spelling of 1321422888 in words is "one billion, three hundred twenty-one million, four hundred twenty-two thousand, eight hundred eighty-eight".