428965868 has 12 divisors (see below), whose sum is σ = 756602112. Its totient is φ = 212793840.

The previous prime is 428965819. The next prime is 428965897. The reversal of 428965868 is 868569824.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421703 + ... + 422718.

It is an arithmetic number, because the mean of its divisors is an integer number (63050176).

Almost surely, 2^428965868 is an apocalyptic number.

It is an amenable number.

428965868 is a deficient number, since it is larger than the sum of its proper divisors (327636244).

428965868 is a wasteful number, since it uses less digits than its factorization.

428965868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844552 (or 844550 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The square root of 428965868 is about 20711.4912065742. The cubic root of 428965868 is about 754.1786708928.

The spelling of 428965868 in words is "four hundred twenty-eight million, nine hundred sixty-five thousand, eight hundred sixty-eight".