216350090 has 16 divisors (see below), whose sum is σ = 424833120. Its totient is φ = 78672720.

The previous prime is 216350089. The next prime is 216350107. The reversal of 216350090 is 90053612.

It is a super-2 number, since 2×216350090² = 93614722886016200, which contains 22 as substring.

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, 983300 + ... + 983519.

It is an arithmetic number, because the mean of its divisors is an integer number (26552070).

Almost surely, 2^216350090 is an apocalyptic number.

216350090 is a deficient number, since it is larger than the sum of its proper divisors (208483030).

216350090 is a wasteful number, since it uses less digits than its factorization.

216350090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966837.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 216350090 is about 14708.8439382570. The cubic root of 216350090 is about 600.3239824349.

The spelling of 216350090 in words is "two hundred sixteen million, three hundred fifty thousand, ninety".