17990468 has 12 divisors (see below), whose sum is σ = 31513020. Its totient is φ = 8986752.

The previous prime is 17990461. The next prime is 17990501. The reversal of 17990468 is 86409971.

It can be written as a sum of positive squares in 2 ways, for example, as 8305924 + 9684544 = 2882^2 + 3112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17990461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7280 + ... + 9432.

It is an arithmetic number, because the mean of its divisors is an integer number (2626085).

Almost surely, 2^17990468 is an apocalyptic number.

It is an amenable number.

17990468 is a deficient number, since it is larger than the sum of its proper divisors (13522552).

17990468 is a wasteful number, since it uses less digits than its factorization.

17990468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246 (or 4244 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 17990468 is about 4241.5171813869. The cubic root of 17990468 is about 262.0278703137.

The spelling of 17990468 in words is "seventeen million, nine hundred ninety thousand, four hundred sixty-eight".