22718001 has 12 divisors (see below), whose sum is σ = 32178512. Its totient is φ = 14253888.

The previous prime is 22717999. The next prime is 22718011. The reversal of 22718001 is 10081722.

It is not a de Polignac number, because 22718001 - 2¹ = 22717999 is a prime.

It is a super-2 number, since 2×22718001² = 1032215138872002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22718011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12235 + ... + 13968.

Almost surely, 2^22718001 is an apocalyptic number.

It is an amenable number.

22718001 is a deficient number, since it is larger than the sum of its proper divisors (9460511).

22718001 is a wasteful number, since it uses less digits than its factorization.

22718001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240 (or 26223 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 22718001 is about 4766.3404200707. The cubic root of 22718001 is about 283.2196432758.

Adding to 22718001 its reverse (10081722), we get a palindrome (32799723).

The spelling of 22718001 in words is "twenty-two million, seven hundred eighteen thousand, one".