17999952 has 80 divisors (see below), whose sum is σ = 49074240. Its totient is φ = 5677056.

The previous prime is 17999911. The next prime is 17999953. The reversal of 17999952 is 25999971.

It is a junction number, because it is equal to n+sod(n) for n = 17999895 and 17999904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17999953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93168 + ... + 93360.

It is an arithmetic number, because the mean of its divisors is an integer number (613428).

Almost surely, 2^17999952 is an apocalyptic number.

17999952 is a gapful number since it is divisible by the number (12) 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 17999952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24537120).

17999952 is an abundant number, since it is smaller than the sum of its proper divisors (31074288).

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

17999952 is a wasteful number, since it uses less digits than its factorization.

17999952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 294 counting only the distinct ones).

The product of its digits is 459270, while the sum is 51.

The square root of 17999952 is about 4242.6350302613. The cubic root of 17999952 is about 262.0739064659.

The spelling of 17999952 in words is "seventeen million, nine hundred ninety-nine thousand, nine hundred fifty-two".