116261280 has 72 divisors (see below), whose sum is σ = 396746532. Its totient is φ = 31002624.

The previous prime is 116261279. The next prime is 116261287. The reversal of 116261280 is 82162611.

116261280 is a `hidden beast` number, since 11 + 626 + 1 + 28 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106750224 + 9511056 = 10332^2 + 3084^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (116261287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38929 + ... + 41808.

Almost surely, 2^116261280 is an apocalyptic number.

116261280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116261280 is an abundant number, since it is smaller than the sum of its proper divisors (280485252).

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

116261280 is a wasteful number, since it uses less digits than its factorization.

116261280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80758 (or 80747 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 116261280 is about 10782.4524112096. The cubic root of 116261280 is about 488.0657888550.

The spelling of 116261280 in words is "one hundred sixteen million, two hundred sixty-one thousand, two hundred eighty".