79281 has 12 divisors (see below), whose sum is σ = 119808. Its totient is φ = 50424.

The previous prime is 79279. The next prime is 79283. The reversal of 79281 is 18297.

It is an interprime number because it is at equal distance from previous prime (79279) and next prime (79283).

It is not a de Polignac number, because 79281 - 2¹ = 79279 is a prime.

It is a super-2 number, since 2×79281² = 12570953922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16 + ... + 398.

It is an arithmetic number, because the mean of its divisors is an integer number (9984).

2⁷⁹²⁸¹ is an apocalyptic number.

It is an amenable number.

79281 is a deficient number, since it is larger than the sum of its proper divisors (40527).

79281 is a wasteful number, since it uses less digits than its factorization.

79281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 409 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 79281 is about 281.5688192965. The cubic root of 79281 is about 42.9592185911.

The spelling of 79281 in words is "seventy-nine thousand, two hundred eighty-one".