87091244 has 6 divisors (see below), whose sum is σ = 152409684. Its totient is φ = 43545620.

The previous prime is 87091201. The next prime is 87091253. The reversal of 87091244 is 44219078.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10886402 + ... + 10886409.

It is an arithmetic number, because the mean of its divisors is an integer number (25401614).

Almost surely, 2^87091244 is an apocalyptic number.

It is an amenable number.

87091244 is a deficient number, since it is larger than the sum of its proper divisors (65318440).

87091244 is a wasteful number, since it uses less digits than its factorization.

87091244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21772815 (or 21772813 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87091244 is about 9332.2689631193. The cubic root of 87091244 is about 443.2596147550.

The spelling of 87091244 in words is "eighty-seven million, ninety-one thousand, two hundred forty-four".