16988890 has 16 divisors (see below), whose sum is σ = 30754080. Its totient is φ = 6756880.

The previous prime is 16988887. The next prime is 16988891. The reversal of 16988890 is 9888961.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16988891) 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, 2956 + ... + 6535.

It is an arithmetic number, because the mean of its divisors is an integer number (1922130).

Almost surely, 2^16988890 is an apocalyptic number.

16988890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16988890 is a deficient number, since it is larger than the sum of its proper divisors (13765190).

16988890 is a wasteful number, since it uses less digits than its factorization.

16988890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9677.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 16988890 is about 4121.7581200260. The cubic root of 16988890 is about 257.0721332544.

The spelling of 16988890 in words is "sixteen million, nine hundred eighty-eight thousand, eight hundred ninety".