87288278 has 32 divisors (see below), whose sum is σ = 165231360. Its totient is φ = 33593760.

The previous prime is 87288239. The next prime is 87288307.

It is a happy number.

87288278 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9368 + ... + 16196.

It is an arithmetic number, because the mean of its divisors is an integer number (5163480).

Almost surely, 2^87288278 is an apocalyptic number.

87288278 is a deficient number, since it is larger than the sum of its proper divisors (77943082).

87288278 is a wasteful number, since it uses less digits than its factorization.

87288278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932.

The product of its digits is 802816, while the sum is 50.

The square root of 87288278 is about 9342.8195958180. The cubic root of 87288278 is about 443.5936377485.

The spelling of 87288278 in words is "eighty-seven million, two hundred eighty-eight thousand, two hundred seventy-eight".