87055280 has 120 divisors (see below), whose sum is σ = 225467712. Its totient is φ = 31229952.

The previous prime is 87055279. The next prime is 87055289. The reversal of 87055280 is 8255078.

It is a self number, because there is not a number n which added to its sum of digits gives 87055280.

It is not an unprimeable number, because it can be changed into a prime (87055289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635372 + ... + 635508.

Almost surely, 2^87055280 is an apocalyptic number.

87055280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112733856).

87055280 is an abundant number, since it is smaller than the sum of its proper divisors (138412432).

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

87055280 is a wasteful number, since it uses less digits than its factorization.

87055280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 87055280 is about 9330.3419015597. The cubic root of 87055280 is about 443.1985922271.

The spelling of 87055280 in words is "eighty-seven million, fifty-five thousand, two hundred eighty".