116358021 has 36 divisors (see below), whose sum is σ = 183877668. Its totient is φ = 70866432.

The previous prime is 116358017. The next prime is 116358031. The reversal of 116358021 is 120853611.

116358021 is a `hidden beast` number, since 1 + 1 + 63 + 580 + 21 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 14630625 + 101727396 = 3825^2 + 10086^2 .

It is not a de Polignac number, because 116358021 - 2² = 116358017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116358031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 171535 + ... + 172211.

It is an arithmetic number, because the mean of its divisors is an integer number (5107713).

Almost surely, 2^116358021 is an apocalyptic number.

It is an amenable number.

116358021 is a deficient number, since it is larger than the sum of its proper divisors (67519647).

116358021 is a wasteful number, since it uses less digits than its factorization.

116358021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 116358021 is about 10786.9375172011. The cubic root of 116358021 is about 488.2011244898.

The spelling of 116358021 in words is "one hundred sixteen million, three hundred fifty-eight thousand, twenty-one".