22573240 has 32 divisors (see below), whose sum is σ = 50958000. Its totient is φ = 8999424.

The previous prime is 22573181. The next prime is 22573241. The reversal of 22573240 is 4237522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22573241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14416 + ... + 15904.

Almost surely, 2^22573240 is an apocalyptic number.

22573240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22573240 is an abundant number, since it is smaller than the sum of its proper divisors (28384760).

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

22573240 is a wasteful number, since it uses less digits than its factorization.

22573240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22573240 is about 4751.1303918120. The cubic root of 22573240 is about 282.6167945814.

The spelling of 22573240 in words is "twenty-two million, five hundred seventy-three thousand, two hundred forty".