17990004 has 12 divisors (see below), whose sum is σ = 41976704. Its totient is φ = 5996664.

The previous prime is 17989999. The next prime is 17990009. The reversal of 17990004 is 40009971.

It is an interprime number because it is at equal distance from previous prime (17989999) and next prime (17990009).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17990009) 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, 749572 + ... + 749595.

Almost surely, 2^17990004 is an apocalyptic number.

It is an amenable number.

17990004 is an abundant number, since it is smaller than the sum of its proper divisors (23986700).

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

17990004 is a wasteful number, since it uses less digits than its factorization.

17990004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499174 (or 1499172 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 17990004 is about 4241.4624836252. The cubic root of 17990004 is about 262.0256176027.

Adding to 17990004 its reverse (40009971), we get a palindrome (57999975).

The spelling of 17990004 in words is "seventeen million, nine hundred ninety thousand, four".