87771276 has 30 divisors (see below), whose sum is σ = 229452300. Its totient is φ = 29256984.

The previous prime is 87771263. The next prime is 87771293. The reversal of 87771276 is 67217778.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 135126 + ... + 135773.

It is an arithmetic number, because the mean of its divisors is an integer number (7648410).

Almost surely, 2^87771276 is an apocalyptic number.

It is an amenable number.

87771276 is an abundant number, since it is smaller than the sum of its proper divisors (141681024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87771276 is a wasteful number, since it uses less digits than its factorization.

87771276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270915 (or 270904 counting only the distinct ones).

The product of its digits is 230496, while the sum is 45.

The square root of 87771276 is about 9368.6325576361. The cubic root of 87771276 is about 444.4103219266.

The spelling of 87771276 in words is "eighty-seven million, seven hundred seventy-one thousand, two hundred seventy-six".