116521890 has 16 divisors (see below), whose sum is σ = 279652608. Its totient is φ = 31072496.

The previous prime is 116521837. The next prime is 116521891. The reversal of 116521890 is 98125611.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116521891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942002 + ... + 1942061.

It is an arithmetic number, because the mean of its divisors is an integer number (17478288).

Almost surely, 2^116521890 is an apocalyptic number.

116521890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

116521890 is an abundant number, since it is smaller than the sum of its proper divisors (163130718).

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

116521890 is a wasteful number, since it uses less digits than its factorization.

116521890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884073.

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

The square root of 116521890 is about 10794.5305595010. The cubic root of 116521890 is about 488.4301976645.

The spelling of 116521890 in words is "one hundred sixteen million, five hundred twenty-one thousand, eight hundred ninety".