87909276 has 144 divisors (see below), whose sum is σ = 267638784. Its totient is φ = 21866112.

The previous prime is 87909271. The next prime is 87909281. The reversal of 87909276 is 67290978.

It is an interprime number because it is at equal distance from previous prime (87909271) and next prime (87909281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87909271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394101 + ... + 394323.

Almost surely, 2^87909276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87909276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133819392).

87909276 is an abundant number, since it is smaller than the sum of its proper divisors (179729508).

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

87909276 is a wasteful number, since it uses less digits than its factorization.

87909276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 87909276 is about 9375.9946672340. The cubic root of 87909276 is about 444.6431107294.

The spelling of 87909276 in words is "eighty-seven million, nine hundred nine thousand, two hundred seventy-six".