87002244 has 216 divisors, whose sum is σ = 277525248. Its totient is φ = 22861440.

The previous prime is 87002189. The next prime is 87002249. The reversal of 87002244 is 44220078.

It is a super-2 number, since 2×87002244² = 15138780922071072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87002249) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2023287 + ... + 2023329.

Almost surely, 2^87002244 is an apocalyptic number.

87002244 is a gapful number since it is divisible by the number (84) 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 87002244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138762624).

87002244 is an abundant number, since it is smaller than the sum of its proper divisors (190523004).

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

87002244 is a wasteful number, since it uses less digits than its factorization.

87002244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 87002244 is about 9327.4993433396. The cubic root of 87002244 is about 443.1085718189.

The spelling of 87002244 in words is "eighty-seven million, two thousand, two hundred forty-four".