22574981 has 8 divisors (see below), whose sum is σ = 26521824. Its totient is φ = 18943920.

The previous prime is 22574971. The next prime is 22574987. The reversal of 22574981 is 18947522.

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

It is a cyclic number.

It is not a de Polignac number, because 22574981 - 2¹⁴ = 22558597 is a prime.

It is a super-2 number, since 2×22574981² = 1019259534300722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22574987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78791 + ... + 79076.

It is an arithmetic number, because the mean of its divisors is an integer number (3315228).

Almost surely, 2^22574981 is an apocalyptic number.

It is an amenable number.

22574981 is a deficient number, since it is larger than the sum of its proper divisors (3946843).

22574981 is a wasteful number, since it uses less digits than its factorization.

22574981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157891.

The product of its digits is 40320, while the sum is 38.

The square root of 22574981 is about 4751.3136078352. The cubic root of 22574981 is about 282.6240601636.

The spelling of 22574981 in words is "twenty-two million, five hundred seventy-four thousand, nine hundred eighty-one".