422727408 has 120 divisors (see below), whose sum is σ = 1229195136. Its totient is φ = 135475200.

The previous prime is 422727401. The next prime is 422727433. The reversal of 422727408 is 804727224.

422727408 is a `hidden beast` number, since 4 + 227 + 27 + 408 = 666.

It is a super-2 number, since 2×422727408² = 357396922948796928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422727401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1254216 + ... + 1254552.

Almost surely, 2^422727408 is an apocalyptic number.

422727408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422727408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614597568).

422727408 is an abundant number, since it is smaller than the sum of its proper divisors (806467728).

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

422727408 is a wasteful number, since it uses less digits than its factorization.

422727408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 422727408 is about 20560.3357949232. The cubic root of 422727408 is about 750.5047908387.

The spelling of 422727408 in words is "four hundred twenty-two million, seven hundred twenty-seven thousand, four hundred eight".