87442860 has 24 divisors (see below), whose sum is σ = 244840176. Its totient is φ = 23318080.

The previous prime is 87442813. The next prime is 87442891. The reversal of 87442860 is 6824478.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 728631 + ... + 728750.

It is an arithmetic number, because the mean of its divisors is an integer number (10201674).

Almost surely, 2^87442860 is an apocalyptic number.

It is an amenable number.

87442860 is an abundant number, since it is smaller than the sum of its proper divisors (157397316).

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

87442860 is a wasteful number, since it uses less digits than its factorization.

87442860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457393 (or 1457391 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 87442860 is about 9351.0887066694. The cubic root of 87442860 is about 443.8553420476.

It can be divided in two parts, 874 and 42860, that added together give a palindrome (43734).

The spelling of 87442860 in words is "eighty-seven million, four hundred forty-two thousand, eight hundred sixty".