428857924 has 12 divisors (see below), whose sum is σ = 818728848. Its totient is φ = 194935400.

The previous prime is 428857921. The next prime is 428857943. The reversal of 428857924 is 429758824.

It is not an unprimeable number, because it can be changed into a prime (428857921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4873342 + ... + 4873429.

It is an arithmetic number, because the mean of its divisors is an integer number (68227404).

Almost surely, 2^428857924 is an apocalyptic number.

428857924 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

428857924 is a deficient number, since it is larger than the sum of its proper divisors (389870924).

428857924 is a wasteful number, since it uses less digits than its factorization.

428857924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746786 (or 9746784 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 428857924 is about 20708.8851462361. The cubic root of 428857924 is about 754.1154056480.

The spelling of 428857924 in words is "four hundred twenty-eight million, eight hundred fifty-seven thousand, nine hundred twenty-four".