422631816 has 16 divisors (see below), whose sum is σ = 1056579600. Its totient is φ = 140877264.

The previous prime is 422631799. The next prime is 422631827. The reversal of 422631816 is 618136224.

It is a nude number because it is divisible by every one of its digits.

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, 8804806 + ... + 8804853.

It is an arithmetic number, because the mean of its divisors is an integer number (66036225).

Almost surely, 2^422631816 is an apocalyptic number.

It is an amenable number.

422631816 is an abundant number, since it is smaller than the sum of its proper divisors (633947784).

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

422631816 is a wasteful number, since it uses less digits than its factorization.

422631816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17609668 (or 17609664 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 422631816 is about 20558.0109932843. The cubic root of 422631816 is about 750.4482156392.

The spelling of 422631816 in words is "four hundred twenty-two million, six hundred thirty-one thousand, eight hundred sixteen".