87287172 has 48 divisors (see below), whose sum is σ = 233224320. Its totient is φ = 24890112.

The previous prime is 87287153. The next prime is 87287173. The reversal of 87287172 is 27178278.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (87287173) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 78154 + ... + 79262.

It is an arithmetic number, because the mean of its divisors is an integer number (4858840).

Almost surely, 2^87287172 is an apocalyptic number.

It is an amenable number.

87287172 is an abundant number, since it is smaller than the sum of its proper divisors (145937148).

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

87287172 is a wasteful number, since it uses less digits than its factorization.

87287172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2058 counting only the distinct ones).

The product of its digits is 87808, while the sum is 42.

The square root of 87287172 is about 9342.7604057901. The cubic root of 87287172 is about 443.5917641994.

The spelling of 87287172 in words is "eighty-seven million, two hundred eighty-seven thousand, one hundred seventy-two".