423521628 has 48 divisors (see below), whose sum is σ = 1073802240. Its totient is φ = 129427200.

The previous prime is 423521617. The next prime is 423521633. The reversal of 423521628 is 826125324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22893 + ... + 37028.

It is an arithmetic number, because the mean of its divisors is an integer number (22370880).

Almost surely, 2^423521628 is an apocalyptic number.

It is an amenable number.

423521628 is an abundant number, since it is smaller than the sum of its proper divisors (650280612).

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

423521628 is a wasteful number, since it uses less digits than its factorization.

423521628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59978 (or 59976 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 423521628 is about 20579.6411047423. The cubic root of 423521628 is about 750.9745127736.

The spelling of 423521628 in words is "four hundred twenty-three million, five hundred twenty-one thousand, six hundred twenty-eight".