428917680 has 100 divisors (see below), whose sum is σ = 1489717152. Its totient is φ = 114376320.

The previous prime is 428917679. The next prime is 428917703. The reversal of 428917680 is 86719824.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26616 + ... + 39575.

Almost surely, 2^428917680 is an apocalyptic number.

428917680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428917680 is an abundant number, since it is smaller than the sum of its proper divisors (1060799472).

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

428917680 is a wasteful number, since it uses less digits than its factorization.

428917680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66216 (or 66201 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 428917680 is about 20710.3278583416. The cubic root of 428917680 is about 754.1504295450.

The spelling of 428917680 in words is "four hundred twenty-eight million, nine hundred seventeen thousand, six hundred eighty".