22273524 has 108 divisors (see below), whose sum is σ = 69809376. Its totient is φ = 5863104.

The previous prime is 22273523. The next prime is 22273561. The reversal of 22273524 is 42537222.

It is a super-2 number, since 2×22273524² = 992219742757152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22273523) 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, 42327 + ... + 42849.

Almost surely, 2^22273524 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 22273524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34904688).

22273524 is an abundant number, since it is smaller than the sum of its proper divisors (47535852).

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

22273524 is a wasteful number, since it uses less digits than its factorization.

22273524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 548 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22273524 is about 4719.4834463106. The cubic root of 22273524 is about 281.3604034707.

The spelling of 22273524 in words is "twenty-two million, two hundred seventy-three thousand, five hundred twenty-four".