22494871 has 24 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 18270000.

The previous prime is 22494869. The next prime is 22494881. The reversal of 22494871 is 17849422.

It is not a de Polignac number, because 22494871 - 2¹ = 22494869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22494871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22494881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89496 + ... + 89746.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^22494871 is an apocalyptic number.

22494871 is a deficient number, since it is larger than the sum of its proper divisors (5084009).

22494871 is a wasteful number, since it uses less digits than its factorization.

22494871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 348 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 22494871 is about 4742.8758153677. The cubic root of 22494871 is about 282.2893555950.

The spelling of 22494871 in words is "twenty-two million, four hundred ninety-four thousand, eight hundred seventy-one".