116389281 has 16 divisors (see below), whose sum is σ = 158773568. Its totient is φ = 75816000.

The previous prime is 116389271. The next prime is 116389289. The reversal of 116389281 is 182983611.

It is not a de Polignac number, because 116389281 - 2⁷ = 116389153 is a prime.

It is a super-2 number, since 2×116389281² = 27092929463393922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116389289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26706 + ... + 30756.

It is an arithmetic number, because the mean of its divisors is an integer number (9923348).

Almost surely, 2^116389281 is an apocalyptic number.

It is an amenable number.

116389281 is a deficient number, since it is larger than the sum of its proper divisors (42384287).

116389281 is a wasteful number, since it uses less digits than its factorization.

116389281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 20736, while the sum is 39.

The square root of 116389281 is about 10788.3863946375. The cubic root of 116389281 is about 488.2448395701.

The spelling of 116389281 in words is "one hundred sixteen million, three hundred eighty-nine thousand, two hundred eighty-one".