307420816 has 10 divisors (see below), whose sum is σ = 595627862. Its totient is φ = 153710400.

The previous prime is 307420811. The next prime is 307420819. The reversal of 307420816 is 618024703.

It can be written as a sum of positive squares in only one way, i.e., 153760000 + 153660816 = 12400^2 + 12396^2 .

It is a super-2 number, since 2×307420816² = 189015116220211712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (307420811) 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 as a sum of consecutive naturals, namely, 9606885 + ... + 9606916.

Almost surely, 2^307420816 is an apocalyptic number.

It is an amenable number.

307420816 is a deficient number, since it is larger than the sum of its proper divisors (288207046).

307420816 is a wasteful number, since it uses less digits than its factorization.

307420816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19213809 (or 19213803 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 307420816 is about 17533.4199744374. The cubic root of 307420816 is about 674.9077631626.

The spelling of 307420816 in words is "three hundred seven million, four hundred twenty thousand, eight hundred sixteen".