116215890 has 64 divisors (see below), whose sum is σ = 327400704. Its totient is φ = 25843968.

The previous prime is 116215861. The next prime is 116215921. The reversal of 116215890 is 98512611.

It is a super-2 number, since 2×116215890² = 27012266176984200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (5115636).

Almost surely, 2^116215890 is an apocalyptic number.

116215890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 116215890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163700352).

116215890 is an abundant number, since it is smaller than the sum of its proper divisors (211184814).

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

116215890 is a wasteful number, since it uses less digits than its factorization.

116215890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 116215890 is about 10780.3473969998. The cubic root of 116215890 is about 488.0022647257.

The spelling of 116215890 in words is "one hundred sixteen million, two hundred fifteen thousand, eight hundred ninety".