428430178 has 32 divisors (see below), whose sum is σ = 724656960. Its totient is φ = 188256960.

The previous prime is 428430157. The next prime is 428430187. The reversal of 428430178 is 871034824.

It is a super-2 number, since 2×428430178² = 367104834842223368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 131068 + ... + 134296.

It is an arithmetic number, because the mean of its divisors is an integer number (22645530).

Almost surely, 2^428430178 is an apocalyptic number.

428430178 is a deficient number, since it is larger than the sum of its proper divisors (296226782).

428430178 is a wasteful number, since it uses less digits than its factorization.

428430178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 428430178 is about 20698.5549737174. The cubic root of 428430178 is about 753.8646021890.

The spelling of 428430178 in words is "four hundred twenty-eight million, four hundred thirty thousand, one hundred seventy-eight".