87934281 has 16 divisors (see below), whose sum is σ = 119387520. Its totient is φ = 57559040.

The previous prime is 87934247. The next prime is 87934289. The reversal of 87934281 is 18243978.

It is a cyclic number.

It is not a de Polignac number, because 87934281 - 2¹⁰ = 87933257 is a prime.

It is a super-2 number, since 2×87934281² = 15464875549973922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87934289) 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, 61705 + ... + 63113.

It is an arithmetic number, because the mean of its divisors is an integer number (7461720).

Almost surely, 2^87934281 is an apocalyptic number.

It is an amenable number.

87934281 is a deficient number, since it is larger than the sum of its proper divisors (31453239).

87934281 is a wasteful number, since it uses less digits than its factorization.

87934281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776.

The product of its digits is 96768, while the sum is 42.

The square root of 87934281 is about 9377.3280309478. The cubic root of 87934281 is about 444.6852649725.

The spelling of 87934281 in words is "eighty-seven million, nine hundred thirty-four thousand, two hundred eighty-one".