17944972 has 12 divisors (see below), whose sum is σ = 31433416. Its totient is φ = 8964000.

The previous prime is 17944967. The next prime is 17944999. The reversal of 17944972 is 27944971.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6847 + ... + 9097.

Almost surely, 2^17944972 is an apocalyptic number.

It is an amenable number.

17944972 is a deficient number, since it is larger than the sum of its proper divisors (13488444).

17944972 is a wasteful number, since it uses less digits than its factorization.

17944972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248 (or 4246 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 17944972 is about 4236.1506111091. The cubic root of 17944972 is about 261.8068035559.

Subtracting 17944972 from its reverse (27944971), we obtain a palindrome (9999999).

The spelling of 17944972 in words is "seventeen million, nine hundred forty-four thousand, nine hundred seventy-two".