22742012 has 24 divisors (see below), whose sum is σ = 42873600. Its totient is φ = 10520496.

The previous prime is 22741997. The next prime is 22742021. The reversal of 22742012 is 21024722.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212 + ... + 6747.

It is an arithmetic number, because the mean of its divisors is an integer number (1786400).

Almost surely, 2^22742012 is an apocalyptic number.

It is an amenable number.

22742012 is a deficient number, since it is larger than the sum of its proper divisors (20131588).

22742012 is a wasteful number, since it uses less digits than its factorization.

22742012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025 (or 7023 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22742012 is about 4768.8585636397. The cubic root of 22742012 is about 283.3193878565.

Adding to 22742012 its reverse (21024722), we get a palindrome (43766734).

The spelling of 22742012 in words is "twenty-two million, seven hundred forty-two thousand, twelve".