22471965 has 32 divisors (see below), whose sum is σ = 42057600. Its totient is φ = 11352960.

The previous prime is 22471963. The next prime is 22472039. The reversal of 22471965 is 56917422.

It is not a de Polignac number, because 22471965 - 2¹ = 22471963 is a prime.

It is a super-2 number, since 2×22471965² = 1009978421922450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22471961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1816 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (1314300).

Almost surely, 2^22471965 is an apocalyptic number.

It is an amenable number.

22471965 is a deficient number, since it is larger than the sum of its proper divisors (19585635).

22471965 is a wasteful number, since it uses less digits than its factorization.

22471965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794 (or 8788 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 22471965 is about 4740.4604206765. The cubic root of 22471965 is about 282.1935068423.

It can be divided in two parts, 22471 and 965, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 22471965 in words is "twenty-two million, four hundred seventy-one thousand, nine hundred sixty-five".