17997442 has 16 divisors (see below), whose sum is σ = 27871200. Its totient is φ = 8710560.

The previous prime is 17997439. The next prime is 17997449. The reversal of 17997442 is 24479971.

It is not an unprimeable number, because it can be changed into a prime (17997449) 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, 10609 + ... + 12187.

It is an arithmetic number, because the mean of its divisors is an integer number (1741950).

Almost surely, 2^17997442 is an apocalyptic number.

17997442 is a deficient number, since it is larger than the sum of its proper divisors (9873758).

17997442 is a wasteful number, since it uses less digits than its factorization.

17997442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

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

The square root of 17997442 is about 4242.3392132172. The cubic root of 17997442 is about 262.0617242837.

The spelling of 17997442 in words is "seventeen million, nine hundred ninety-seven thousand, four hundred forty-two".