22472681 has 8 divisors (see below), whose sum is σ = 28017984. Its totient is φ = 17511120.

The previous prime is 22472677. The next prime is 22472701. The reversal of 22472681 is 18627422.

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

It is not a de Polignac number, because 22472681 - 2² = 22472677 is a prime.

It is a super-2 number, since 2×22472681² = 1010042782655522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22472621) 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, 145850 + ... + 146003.

It is an arithmetic number, because the mean of its divisors is an integer number (3502248).

Almost surely, 2^22472681 is an apocalyptic number.

It is an amenable number.

22472681 is a deficient number, since it is larger than the sum of its proper divisors (5545303).

22472681 is a wasteful number, since it uses less digits than its factorization.

22472681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291871.

The product of its digits is 10752, while the sum is 32.

The square root of 22472681 is about 4740.5359401654. The cubic root of 22472681 is about 282.1965038863.

The spelling of 22472681 in words is "twenty-two million, four hundred seventy-two thousand, six hundred eighty-one".