87222036 has 96 divisors (see below), whose sum is σ = 240371712. Its totient is φ = 24317440.

The previous prime is 87222029. The next prime is 87222059. The reversal of 87222036 is 63022278.

It is a junction number, because it is equal to n+sod(n) for n = 87221994 and 87222012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105055 + ... + 105881.

It is an arithmetic number, because the mean of its divisors is an integer number (2503872).

Almost surely, 2^87222036 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 87222036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120185856).

87222036 is an abundant number, since it is smaller than the sum of its proper divisors (153149676).

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

87222036 is a wasteful number, since it uses less digits than its factorization.

87222036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 87222036 is about 9339.2738475751. The cubic root of 87222036 is about 443.4813967667.

The spelling of 87222036 in words is "eighty-seven million, two hundred twenty-two thousand, thirty-six".