1320647922 has 64 divisors (see below), whose sum is σ = 3233416320. Its totient is φ = 396216000.

The previous prime is 1320647899. The next prime is 1320647929. The reversal of 1320647922 is 2297460231.

1320647922 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 647 + 9 + 2 + 2 = 666.

It is a super-2 number, since 2×1320647922² = 3488221867765836168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320647929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48988 + ... + 71000.

It is an arithmetic number, because the mean of its divisors is an integer number (50522130).

Almost surely, 2^1320647922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320647922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616708160).

1320647922 is an abundant number, since it is smaller than the sum of its proper divisors (1912768398).

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

1320647922 is a wasteful number, since it uses less digits than its factorization.

1320647922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22136 (or 22130 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1320647922 is about 36340.7198883016. The cubic root of 1320647922 is about 1097.1407622815.

The spelling of 1320647922 in words is "one billion, three hundred twenty million, six hundred forty-seven thousand, nine hundred twenty-two".