423372638 has 16 divisors (see below), whose sum is σ = 713645856. Its totient is φ = 186906720.

The previous prime is 423372629. The next prime is 423372643. The reversal of 423372638 is 836273324.

It is a congruent number.

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, 353393 + ... + 354588.

It is an arithmetic number, because the mean of its divisors is an integer number (44602866).

Almost surely, 2^423372638 is an apocalyptic number.

423372638 is a deficient number, since it is larger than the sum of its proper divisors (290273218).

423372638 is a wasteful number, since it uses less digits than its factorization.

423372638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708019.

The product of its digits is 145152, while the sum is 38.

The square root of 423372638 is about 20576.0209467234. The cubic root of 423372638 is about 750.8864410687.

The spelling of 423372638 in words is "four hundred twenty-three million, three hundred seventy-two thousand, six hundred thirty-eight".