116170821 has 48 divisors (see below), whose sum is σ = 190814400. Its totient is φ = 69437088.

The previous prime is 116170819. The next prime is 116170829. The reversal of 116170821 is 128071611.

It is not a de Polignac number, because 116170821 - 2¹ = 116170819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116170829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648910 + ... + 649088.

It is an arithmetic number, because the mean of its divisors is an integer number (3975300).

Almost surely, 2^116170821 is an apocalyptic number.

It is an amenable number.

116170821 is a deficient number, since it is larger than the sum of its proper divisors (74643579).

116170821 is a wasteful number, since it uses less digits than its factorization.

116170821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 116170821 is about 10778.2568627770. The cubic root of 116170821 is about 487.9391734743.

The spelling of 116170821 in words is "one hundred sixteen million, one hundred seventy thousand, eight hundred twenty-one".