17628990 has 16 divisors (see below), whose sum is σ = 42309648. Its totient is φ = 4701056.

The previous prime is 17628967. The next prime is 17628991. The reversal of 17628990 is 9982671.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17628991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293787 + ... + 293846.

It is an arithmetic number, because the mean of its divisors is an integer number (2644353).

Almost surely, 2^17628990 is an apocalyptic number.

17628990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17628990 is an abundant number, since it is smaller than the sum of its proper divisors (24680658).

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

17628990 is a wasteful number, since it uses less digits than its factorization.

17628990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587643.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 17628990 is about 4198.6890811300. The cubic root of 17628990 is about 260.2610297619.

The spelling of 17628990 in words is "seventeen million, six hundred twenty-eight thousand, nine hundred ninety".