17942868 has 72 divisors (see below), whose sum is σ = 47375328. Its totient is φ = 5721408.

The previous prime is 17942867. The next prime is 17942879. The reversal of 17942868 is 86824971.

Its product of digits (193536) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17942863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103630 + ... + 103802.

Almost surely, 2^17942868 is an apocalyptic number.

17942868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17942868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23687664).

17942868 is an abundant number, since it is smaller than the sum of its proper divisors (29432460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17942868 is a wasteful number, since it uses less digits than its factorization.

17942868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 288 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 17942868 is about 4235.9022651615. The cubic root of 17942868 is about 261.7965711066.

The spelling of 17942868 in words is "seventeen million, nine hundred forty-two thousand, eight hundred sixty-eight".