428970 has 32 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 112320.

The previous prime is 428957. The next prime is 428977. The reversal of 428970 is 79824.

428970 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (428977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2280 + ... + 2460.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2⁴²⁸⁹⁷⁰ is an apocalyptic number.

428970 is an abundant number, since it is smaller than the sum of its proper divisors (619350).

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

428970 is a wasteful number, since it uses less digits than its factorization.

428970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 428970 is about 654.9580139215. The cubic root of 428970 is about 75.4181092419.

The spelling of 428970 in words is "four hundred twenty-eight thousand, nine hundred seventy".