428570408 has 128 divisors (see below), whose sum is σ = 1044057600. Its totient is φ = 160883712.

The previous prime is 428570407. The next prime is 428570411. The reversal of 428570408 is 804075824.

It is a super-2 number, since 2×428570408² = 367345189226572928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428570407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11582966 + ... + 11583002.

It is an arithmetic number, because the mean of its divisors is an integer number (8156700).

Almost surely, 2^428570408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428570408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522028800).

428570408 is an abundant number, since it is smaller than the sum of its proper divisors (615487192).

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

428570408 is a wasteful number, since it uses less digits than its factorization.

428570408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 428570408 is about 20701.9421311142. The cubic root of 428570408 is about 753.9468426620.

The spelling of 428570408 in words is "four hundred twenty-eight million, five hundred seventy thousand, four hundred eight".