17993712 has 80 divisors (see below), whose sum is σ = 51746688. Its totient is φ = 5341440.

The previous prime is 17993707. The next prime is 17993713. The reversal of 17993712 is 21739971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17993713) 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, 27663 + ... + 28305.

Almost surely, 2^17993712 is an apocalyptic number.

17993712 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 17993712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25873344).

17993712 is an abundant number, since it is smaller than the sum of its proper divisors (33752976).

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

17993712 is a wasteful number, since it uses less digits than its factorization.

17993712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 712 counting only the distinct ones).

The product of its digits is 23814, while the sum is 39.

The square root of 17993712 is about 4241.8995744831. The cubic root of 17993712 is about 262.0436187891.

The spelling of 17993712 in words is "seventeen million, nine hundred ninety-three thousand, seven hundred twelve".