22520742 has 8 divisors (see below), whose sum is σ = 45041496. Its totient is φ = 7506912.

The previous prime is 22520741. The next prime is 22520747. The reversal of 22520742 is 24702522.

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

22520742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520741) 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, 1876723 + ... + 1876734.

It is an arithmetic number, because the mean of its divisors is an integer number (5630187).

Almost surely, 2^22520742 is an apocalyptic number.

22520742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22520742 is a wasteful number, since it uses less digits than its factorization.

22520742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753462.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22520742 is about 4745.6023853669. The cubic root of 22520742 is about 282.3975329951.

The spelling of 22520742 in words is "twenty-two million, five hundred twenty thousand, seven hundred forty-two".