1320472656 has 60 divisors (see below), whose sum is σ = 3701822592. Its totient is φ = 439403328.

The previous prime is 1320472651. The next prime is 1320472663. The reversal of 1320472656 is 6562740231.

1320472656 is a `hidden beast` number, since 132 + 0 + 472 + 6 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1320472656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320472651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79855 + ... + 94961.

Almost surely, 2^1320472656 is an apocalyptic number.

1320472656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1320472656 is the 19424-th nonagonal number.

It is an amenable number.

1320472656 is an abundant number, since it is smaller than the sum of its proper divisors (2381349936).

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

1320472656 is a wasteful number, since it uses less digits than its factorization.

1320472656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15728 (or 15719 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1320472656 is about 36338.3083811011. The cubic root of 1320472656 is about 1097.0922255048.

The spelling of 1320472656 in words is "one billion, three hundred twenty million, four hundred seventy-two thousand, six hundred fifty-six".