87705044 has 12 divisors (see below), whose sum is σ = 175410144. Its totient is φ = 37587864.

The previous prime is 87705031. The next prime is 87705053. The reversal of 87705044 is 44050778.

It is a happy number.

87705044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 87704995 and 87705013.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1566134 + ... + 1566189.

It is an arithmetic number, because the mean of its divisors is an integer number (14617512).

Almost surely, 2^87705044 is an apocalyptic number.

It is an amenable number.

87705044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87705044 is a wasteful number, since it uses less digits than its factorization.

87705044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132334 (or 3132332 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 87705044 is about 9365.0971164212. The cubic root of 87705044 is about 444.2985101337.

The spelling of 87705044 in words is "eighty-seven million, seven hundred five thousand, forty-four".