87227988 has 12 divisors (see below), whose sum is σ = 203532000. Its totient is φ = 29075992.

The previous prime is 87227971. The next prime is 87227989. The reversal of 87227988 is 88972278.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 87227988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87227989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634488 + ... + 3634511.

It is an arithmetic number, because the mean of its divisors is an integer number (16961000).

Almost surely, 2^87227988 is an apocalyptic number.

It is an amenable number.

87227988 is an abundant number, since it is smaller than the sum of its proper divisors (116304012).

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

87227988 is a wasteful number, since it uses less digits than its factorization.

87227988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269006 (or 7269004 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 87227988 is about 9339.5924964636. The cubic root of 87227988 is about 443.4914842070.

The spelling of 87227988 in words is "eighty-seven million, two hundred twenty-seven thousand, nine hundred eighty-eight".