423430028 has 12 divisors (see below), whose sum is σ = 846860112. Its totient is φ = 181470000.

The previous prime is 423430019. The next prime is 423430031. The reversal of 423430028 is 820034324.

423430028 is an admirable number.

It is a super-2 number, since 2×423430028² = 358585977224161568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 423429979 and 423430006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561223 + ... + 7561278.

It is an arithmetic number, because the mean of its divisors is an integer number (70571676).

Almost surely, 2^423430028 is an apocalyptic number.

It is an amenable number.

423430028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423430028 is a wasteful number, since it uses less digits than its factorization.

423430028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15122512 (or 15122510 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 423430028 is about 20577.4154839717. The cubic root of 423430028 is about 750.9203681753.

The spelling of 423430028 in words is "four hundred twenty-three million, four hundred thirty thousand, twenty-eight".