22717971 has 6 divisors (see below), whose sum is σ = 32814860. Its totient is φ = 15145308.

The previous prime is 22717969. The next prime is 22717979. The reversal of 22717971 is 17971722.

It is not a de Polignac number, because 22717971 - 2¹ = 22717969 is a prime.

It is a super-2 number, since 2×22717971² = 1032212412713682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22717979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262101 + ... + 1262118.

Almost surely, 2^22717971 is an apocalyptic number.

22717971 is a deficient number, since it is larger than the sum of its proper divisors (10096889).

22717971 is a wasteful number, since it uses less digits than its factorization.

22717971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524225 (or 2524222 counting only the distinct ones).

The product of its digits is 12348, while the sum is 36.

The square root of 22717971 is about 4766.3372730011. The cubic root of 22717971 is about 283.2195186083.

The spelling of 22717971 in words is "twenty-two million, seven hundred seventeen thousand, nine hundred seventy-one".