22470881 has 4 divisors (see below), whose sum is σ = 22584000. Its totient is φ = 22357764.

The previous prime is 22470871. The next prime is 22470883. The reversal of 22470881 is 18807422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22470881 - 2¹⁸ = 22208737 is a prime.

It is a super-2 number, since 2×22470881² = 1009880985832322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22470883) 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, 56261 + ... + 56658.

It is an arithmetic number, because the mean of its divisors is an integer number (5646000).

Almost surely, 2^22470881 is an apocalyptic number.

It is an amenable number.

22470881 is a deficient number, since it is larger than the sum of its proper divisors (113119).

22470881 is a wasteful number, since it uses less digits than its factorization.

22470881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113118.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 22470881 is about 4740.3460844120. The cubic root of 22470881 is about 282.1889692969.

The spelling of 22470881 in words is "twenty-two million, four hundred seventy thousand, eight hundred eighty-one".