87740784 has 60 divisors (see below), whose sum is σ = 258484200. Its totient is φ = 27706752.

The previous prime is 87740773. The next prime is 87740789. The reversal of 87740784 is 48704778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87740789) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13299 + ... + 18770.

It is an arithmetic number, because the mean of its divisors is an integer number (4308070).

Almost surely, 2^87740784 is an apocalyptic number.

It is an amenable number.

87740784 is an abundant number, since it is smaller than the sum of its proper divisors (170743416).

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

87740784 is a wasteful number, since it uses less digits than its factorization.

87740784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32102 (or 32093 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 87740784 is about 9367.0050709925. The cubic root of 87740784 is about 444.3588528140.

The spelling of 87740784 in words is "eighty-seven million, seven hundred forty thousand, seven hundred eighty-four".