16544990 has 32 divisors (see below), whose sum is σ = 37131264. Its totient is φ = 5156640.

The previous prime is 16544977. The next prime is 16545007. The reversal of 16544990 is 9944561.

It is a Smith number, since the sum of its digits (38) 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9974 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (1160352).

Almost surely, 2^16544990 is an apocalyptic number.

16544990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16544990 is an abundant number, since it is smaller than the sum of its proper divisors (20586274).

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

16544990 is a wasteful number, since it uses less digits than its factorization.

16544990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21512.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 16544990 is about 4067.5533186425. The cubic root of 16544990 is about 254.8133454002.

The spelling of 16544990 in words is "sixteen million, five hundred forty-four thousand, nine hundred ninety".