423356428 has 24 divisors (see below), whose sum is σ = 809625600. Its totient is φ = 192101520.

The previous prime is 423356407. The next prime is 423356443. The reversal of 423356428 is 824653324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18325 + ... + 34387.

It is an arithmetic number, because the mean of its divisors is an integer number (33734400).

Almost surely, 2^423356428 is an apocalyptic number.

It is an amenable number.

423356428 is a deficient number, since it is larger than the sum of its proper divisors (386269172).

423356428 is a wasteful number, since it uses less digits than its factorization.

423356428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16677 (or 16675 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 423356428 is about 20575.6270378329. The cubic root of 423356428 is about 750.8768576872.

The spelling of 423356428 in words is "four hundred twenty-three million, three hundred fifty-six thousand, four hundred twenty-eight".