307699056 has 240 divisors, whose sum is σ = 1044060160. Its totient is φ = 82736640.

The previous prime is 307699033. The next prime is 307699081. The reversal of 307699056 is 650996703.

It is a super-2 number, since 2×307699056² = 189357418126582272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1343550 + ... + 1343778.

Almost surely, 2^307699056 is an apocalyptic number.

307699056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307699056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522030080).

307699056 is an abundant number, since it is smaller than the sum of its proper divisors (736361104).

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

307699056 is a wasteful number, since it uses less digits than its factorization.

307699056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 307699056 is about 17541.3527414507. The cubic root of 307699056 is about 675.1113166208. Note that the first 3 decimals are identical.

The spelling of 307699056 in words is "three hundred seven million, six hundred ninety-nine thousand, fifty-six".