22494642 has 16 divisors (see below), whose sum is σ = 45220032. Its totient is φ = 7459760.

The previous prime is 22494607. The next prime is 22494649. The reversal of 22494642 is 24649422.

It is not an unprimeable number, because it can be changed into a prime (22494649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8334 + ... + 10697.

It is an arithmetic number, because the mean of its divisors is an integer number (2826252).

Almost surely, 2^22494642 is an apocalyptic number.

22494642 is an abundant number, since it is smaller than the sum of its proper divisors (22725390).

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

22494642 is a wasteful number, since it uses less digits than its factorization.

22494642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19233.

The product of its digits is 27648, while the sum is 33.

The square root of 22494642 is about 4742.8516738351. The cubic root of 22494642 is about 282.2883976806.

The spelling of 22494642 in words is "twenty-two million, four hundred ninety-four thousand, six hundred forty-two".