422549136 has 75 divisors (see below), whose sum is σ = 1225125363. Its totient is φ = 140603040.

The previous prime is 422549081. The next prime is 422549137. The reversal of 422549136 is 631945224.

It is a happy number.

The square root of 422549136 is 20556.

It is a perfect power (a square), and thus also a powerful number.

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

Its product of digits (51840) is a multiple of the sum of its prime divisors (576).

It is a self number, because there is not a number n which added to its sum of digits gives 422549136.

It is not an unprimeable number, because it can be changed into a prime (422549137) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 739731 + ... + 740301.

Almost surely, 2^422549136 is an apocalyptic number.

422549136 is the 20556-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422549136

422549136 is an abundant number, since it is smaller than the sum of its proper divisors (802576227).

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

422549136 is an frugal number, since it uses more digits than its factorization.

422549136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 576 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The cubic root of 422549136 is about 750.3992754012.

Multiplying 422549136 by its sum of digits (36), we get a square (15211768896 = 123336²).

422549136 divided by its sum of digits (36) gives a square (11737476 = 3426²).

It can be divided in two parts, 4225 and 49136, that added together give a square (53361 = 231²).

The spelling of 422549136 in words is "four hundred twenty-two million, five hundred forty-nine thousand, one hundred thirty-six".