422723920 has 40 divisors (see below), whose sum is σ = 984472704. Its totient is φ = 168807552.

The previous prime is 422723911. The next prime is 422723999. The reversal of 422723920 is 29327224.

It is a tau number, because it is divible by the number of its divisors (40).

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, 47677 + ... + 55843.

Almost surely, 2^422723920 is an apocalyptic number.

422723920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422723920 is an abundant number, since it is smaller than the sum of its proper divisors (561748784).

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

422723920 is a wasteful number, since it uses less digits than its factorization.

422723920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8827 (or 8821 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 422723920 is about 20560.2509712309. The cubic root of 422723920 is about 750.5027266496.

The spelling of 422723920 in words is "four hundred twenty-two million, seven hundred twenty-three thousand, nine hundred twenty".