1320856308 has 60 divisors (see below), whose sum is σ = 3564392832. Its totient is φ = 426079440.

The previous prime is 1320856289. The next prime is 1320856309. The reversal of 1320856308 is 8036580231.

1320856308 is a `hidden beast` number, since 13 + 2 + 0 + 8 + 5 + 630 + 8 = 666.

It is a super-2 number, since 2×1320856308² = 3489322772766781728, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320856309) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55710 + ... + 75797.

Almost surely, 2^1320856308 is an apocalyptic number.

1320856308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1320856308 is an abundant number, since it is smaller than the sum of its proper divisors (2243536524).

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

1320856308 is a wasteful number, since it uses less digits than its factorization.

1320856308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131554 (or 131543 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1320856308 is about 36343.5868895738. The cubic root of 1320856308 is about 1097.1984654606.

The spelling of 1320856308 in words is "one billion, three hundred twenty million, eight hundred fifty-six thousand, three hundred eight".