22742532 has 60 divisors (see below), whose sum is σ = 62965980. Its totient is φ = 7133184.

The previous prime is 22742527. The next prime is 22742539. The reversal of 22742532 is 23524722.

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 7485696 = 3906^2 + 2736^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22742496 and 22742505.

It is not an unprimeable number, because it can be changed into a prime (22742539) 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, 3444 + ... + 7572.

It is an arithmetic number, because the mean of its divisors is an integer number (1049433).

Almost surely, 2^22742532 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 22742532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31482990).

22742532 is an abundant number, since it is smaller than the sum of its proper divisors (40223448).

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

22742532 is a wasteful number, since it uses less digits than its factorization.

22742532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162 (or 4151 counting only the distinct ones).

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

The square root of 22742532 is about 4768.9130837121. The cubic root of 22742532 is about 283.3215472221.

The spelling of 22742532 in words is "twenty-two million, seven hundred forty-two thousand, five hundred thirty-two".