428570226 has 48 divisors (see below), whose sum is σ = 1095464448. Its totient is φ = 118497600.

The previous prime is 428570209. The next prime is 428570237. The reversal of 428570226 is 622075824.

428570226 is a `hidden beast` number, since 428 + 5 + 7 + 0 + 226 = 666.

It is a super-2 number, since 2×428570226² = 367344877227382152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50955 + ... + 58766.

It is an arithmetic number, because the mean of its divisors is an integer number (22822176).

Almost surely, 2^428570226 is an apocalyptic number.

428570226 is an abundant number, since it is smaller than the sum of its proper divisors (666894222).

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

428570226 is a wasteful number, since it uses less digits than its factorization.

428570226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109767 (or 109764 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 428570226 is about 20701.9377353909. The cubic root of 428570226 is about 753.9467359363.

The spelling of 428570226 in words is "four hundred twenty-eight million, five hundred seventy thousand, two hundred twenty-six".