87727293 has 20 divisors (see below), whose sum is σ = 138760380. Its totient is φ = 55043712.

The previous prime is 87727273. The next prime is 87727301. The reversal of 87727293 is 39272778.

It can be written as a sum of positive squares in 2 ways, for example, as 35497764 + 52229529 = 5958^2 + 7227^2 .

It is not a de Polignac number, because 87727293 - 2⁶ = 87727229 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87727273) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30478 + ... + 33231.

It is an arithmetic number, because the mean of its divisors is an integer number (6938019).

Almost surely, 2^87727293 is an apocalyptic number.

It is an amenable number.

87727293 is a deficient number, since it is larger than the sum of its proper divisors (51033087).

87727293 is a wasteful number, since it uses less digits than its factorization.

87727293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63738 (or 63729 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 87727293 is about 9366.2849091836. The cubic root of 87727293 is about 444.3360768130.

The spelling of 87727293 in words is "eighty-seven million, seven hundred twenty-seven thousand, two hundred ninety-three".