22523530 has 8 divisors (see below), whose sum is σ = 40542372. Its totient is φ = 9009408.

The previous prime is 22523519. The next prime is 22523533. The reversal of 22523530 is 3532522.

It can be written as a sum of positive squares in 2 ways, for example, as 21464689 + 1058841 = 4633^2 + 1029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22523533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126167 + ... + 1126186.

Almost surely, 2^22523530 is an apocalyptic number.

22523530 is a deficient number, since it is larger than the sum of its proper divisors (18018842).

22523530 is a wasteful number, since it uses less digits than its factorization.

22523530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252360.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 22523530 is about 4745.8961219142. The cubic root of 22523530 is about 282.4091858354.

The spelling of 22523530 in words is "twenty-two million, five hundred twenty-three thousand, five hundred thirty".