87432287 has 4 divisors (see below), whose sum is σ = 89465640. Its totient is φ = 85398936.

The previous prime is 87432259. The next prime is 87432299. The reversal of 87432287 is 78223478.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87432287 - 2⁸ = 87432031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87432217) 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, 1016612 + ... + 1016697.

It is an arithmetic number, because the mean of its divisors is an integer number (22366410).

Almost surely, 2^87432287 is an apocalyptic number.

87432287 is a deficient number, since it is larger than the sum of its proper divisors (2033353).

87432287 is a wasteful number, since it uses less digits than its factorization.

87432287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033352.

The product of its digits is 150528, while the sum is 41.

The square root of 87432287 is about 9350.5233543369. The cubic root of 87432287 is about 443.8374519966.

The spelling of 87432287 in words is "eighty-seven million, four hundred thirty-two thousand, two hundred eighty-seven".