57428307 has 6 divisors (see below), whose sum is σ = 82952012. Its totient is φ = 38285532.

The previous prime is 57428303. The next prime is 57428311. The reversal of 57428307 is 70382475.

57428307 is a `hidden beast` number, since 574 + 2 + 83 + 0 + 7 = 666.

57428307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57428303) and next prime (57428311).

It is not a de Polignac number, because 57428307 - 2² = 57428303 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (57428303) 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 5 ways as a sum of consecutive naturals, for example, 3190453 + ... + 3190470.

Almost surely, 2^57428307 is an apocalyptic number.

57428307 is a deficient number, since it is larger than the sum of its proper divisors (25523705).

57428307 is a wasteful number, since it uses less digits than its factorization.

57428307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380929 (or 6380926 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 57428307 is about 7578.1466731649. The cubic root of 57428307 is about 385.8116502589.

The spelling of 57428307 in words is "fifty-seven million, four hundred twenty-eight thousand, three hundred seven".