22474981 has 4 divisors (see below), whose sum is σ = 22497772. Its totient is φ = 22452192.

The previous prime is 22474973. The next prime is 22474993. The reversal of 22474981 is 18947422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21242881 + 1232100 = 4609^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 22474981 - 2³ = 22474973 is a prime.

It is a super-2 number, since 2×22474981² = 1010249541900722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22474981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22474181) 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, 9846 + ... + 11911.

It is an arithmetic number, because the mean of its divisors is an integer number (5624443).

Almost surely, 2^22474981 is an apocalyptic number.

It is an amenable number.

22474981 is a deficient number, since it is larger than the sum of its proper divisors (22791).

22474981 is a wasteful number, since it uses less digits than its factorization.

22474981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22790.

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

The square root of 22474981 is about 4740.7785225636. The cubic root of 22474981 is about 282.2061308317.

The spelling of 22474981 in words is "twenty-two million, four hundred seventy-four thousand, nine hundred eighty-one".