87742744 has 8 divisors (see below), whose sum is σ = 164517660. Its totient is φ = 43871368.

The previous prime is 87742691. The next prime is 87742751. The reversal of 87742744 is 44724778.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 87742744.

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 as a sum of consecutive naturals, namely, 5483914 + ... + 5483929.

Almost surely, 2^87742744 is an apocalyptic number.

It is an amenable number.

87742744 is a deficient number, since it is larger than the sum of its proper divisors (76774916).

87742744 is a wasteful number, since it uses less digits than its factorization.

87742744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10967849 (or 10967845 counting only the distinct ones).

The product of its digits is 351232, while the sum is 43.

The square root of 87742744 is about 9367.1096929629. The cubic root of 87742744 is about 444.3621615637.

The spelling of 87742744 in words is "eighty-seven million, seven hundred forty-two thousand, seven hundred forty-four".