22468428 has 60 divisors (see below), whose sum is σ = 60658752. Its totient is φ = 7244640.

The previous prime is 22468421. The next prime is 22468463. The reversal of 22468428 is 82486422.

It is a happy number.

22468428 is a `hidden beast` number, since 224 + 6 + 8 + 428 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22468392 and 22468401.

It is not an unprimeable number, because it can be changed into a prime (22468421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8926 + ... + 11162.

Almost surely, 2^22468428 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 22468428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30329376).

22468428 is an abundant number, since it is smaller than the sum of its proper divisors (38190324).

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

22468428 is a wasteful number, since it uses less digits than its factorization.

22468428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284 (or 2273 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 22468428 is about 4740.0873409675. The cubic root of 22468428 is about 282.1787006781.

The spelling of 22468428 in words is "twenty-two million, four hundred sixty-eight thousand, four hundred twenty-eight".