428285924 has 12 divisors (see below), whose sum is σ = 817636848. Its totient is φ = 194675400.

The previous prime is 428285903. The next prime is 428285927. The reversal of 428285924 is 429582824.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 9733771 = 428285924 / (4 + 2 + 8 + 2 + 8 + 5 + 9 + 2 + 4).

It is not an unprimeable number, because it can be changed into a prime (428285927) 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, 4866842 + ... + 4866929.

It is an arithmetic number, because the mean of its divisors is an integer number (68136404).

Almost surely, 2^428285924 is an apocalyptic number.

428285924 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

428285924 is a deficient number, since it is larger than the sum of its proper divisors (389350924).

428285924 is a wasteful number, since it uses less digits than its factorization.

428285924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733786 (or 9733784 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 428285924 is about 20695.0700409542. The cubic root of 428285924 is about 753.7799830395.

The spelling of 428285924 in words is "four hundred twenty-eight million, two hundred eighty-five thousand, nine hundred twenty-four".