16216890 has 32 divisors (see below), whose sum is σ = 39099456. Its totient is φ = 4304640.

The previous prime is 16216873. The next prime is 16216903. The reversal of 16216890 is 9861261.

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, 6109 + ... + 8351.

It is an arithmetic number, because the mean of its divisors is an integer number (1221858).

Almost surely, 2^16216890 is an apocalyptic number.

16216890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16216890 is an abundant number, since it is smaller than the sum of its proper divisors (22882566).

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

16216890 is a wasteful number, since it uses less digits than its factorization.

16216890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 16216890 is about 4027.0199900174. The cubic root of 16216890 is about 253.1177047128.

The spelling of 16216890 in words is "sixteen million, two hundred sixteen thousand, eight hundred ninety".