422621136 has 120 divisors (see below), whose sum is σ = 1410564480. Its totient is φ = 115492608.

The previous prime is 422621119. The next prime is 422621137. The reversal of 422621136 is 631126224.

422621136 is a `hidden beast` number, since 4 + 2 + 2 + 621 + 1 + 36 = 666.

It is a super-3 number, since 3×422621136³ (a number of 27 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621137) 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, 14070 + ... + 32298.

It is an arithmetic number, because the mean of its divisors is an integer number (11754704).

Almost surely, 2^422621136 is an apocalyptic number.

422621136 is a gapful number since it is divisible by the number (46) 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 422621136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705282240).

422621136 is an abundant number, since it is smaller than the sum of its proper divisors (987943344).

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

422621136 is a wasteful number, since it uses less digits than its factorization.

422621136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18273 (or 18264 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 422621136 is about 20557.7512388880. The cubic root of 422621136 is about 750.4418942548.

The spelling of 422621136 in words is "four hundred twenty-two million, six hundred twenty-one thousand, one hundred thirty-six".