16888890 has 16 divisors (see below), whose sum is σ = 40533408. Its totient is φ = 4503696.

The previous prime is 16888847. The next prime is 16888901. The reversal of 16888890 is 9888861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281452 + ... + 281511.

It is an arithmetic number, because the mean of its divisors is an integer number (2533338).

Almost surely, 2^16888890 is an apocalyptic number.

16888890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16888890 is an abundant number, since it is smaller than the sum of its proper divisors (23644518).

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

16888890 is a wasteful number, since it uses less digits than its factorization.

16888890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562973.

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 16888890 is about 4109.6094704972. The cubic root of 16888890 is about 256.5667477116.

The spelling of 16888890 in words is "sixteen million, eight hundred eighty-eight thousand, eight hundred ninety".