22457484 has 108 divisors (see below), whose sum is σ = 68468400. Its totient is φ = 6181056.

The previous prime is 22457473. The next prime is 22457489. The reversal of 22457484 is 48475422.

22457484 is a `hidden beast` number, since 2 + 2 + 4 + 574 + 84 = 666.

It is a super-2 number, since 2×22457484² = 1008677175220512, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (22457489) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50937 + ... + 51375.

Almost surely, 2^22457484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22457484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34234200).

22457484 is an abundant number, since it is smaller than the sum of its proper divisors (46010916).

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

22457484 is a wasteful number, since it uses less digits than its factorization.

22457484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 480 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 22457484 is about 4738.9327912516. The cubic root of 22457484 is about 282.1328783768.

The spelling of 22457484 in words is "twenty-two million, four hundred fifty-seven thousand, four hundred eighty-four".