17947942 has 8 divisors (see below), whose sum is σ = 27548136. Its totient is φ = 8765232.

The previous prime is 17947939. The next prime is 17947957. The reversal of 17947942 is 24974971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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, 104263 + ... + 104434.

It is an arithmetic number, because the mean of its divisors is an integer number (3443517).

Almost surely, 2^17947942 is an apocalyptic number.

17947942 is a deficient number, since it is larger than the sum of its proper divisors (9600194).

17947942 is a wasteful number, since it uses less digits than its factorization.

17947942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208742.

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

The square root of 17947942 is about 4236.5011507139. The cubic root of 17947942 is about 261.8212462888.

The spelling of 17947942 in words is "seventeen million, nine hundred forty-seven thousand, nine hundred forty-two".