307679428 has 18 divisors (see below), whose sum is σ = 626347806. Its totient is φ = 131862528.

The previous prime is 307679399. The next prime is 307679429. The reversal of 307679428 is 824976703.

It can be written as a sum of positive squares in only one way, i.e., 251159104 + 56520324 = 15848^2 + 7518^2 .

It is not an unprimeable number, because it can be changed into a prime (307679429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 784701 + ... + 785092.

Almost surely, 2^307679428 is an apocalyptic number.

It is an amenable number.

307679428 is an abundant number, since it is smaller than the sum of its proper divisors (318668378).

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

307679428 is a wasteful number, since it uses less digits than its factorization.

307679428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569811 (or 1569802 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 307679428 is about 17540.7932545823. The cubic root of 307679428 is about 675.0969612884.

The spelling of 307679428 in words is "three hundred seven million, six hundred seventy-nine thousand, four hundred twenty-eight".