87736390 has 16 divisors (see below), whose sum is σ = 180486432. Its totient is φ = 30081024.

The previous prime is 87736381. The next prime is 87736391. The reversal of 87736390 is 9363778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87736391) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 626619 + ... + 626758.

It is an arithmetic number, because the mean of its divisors is an integer number (11280402).

Almost surely, 2^87736390 is an apocalyptic number.

87736390 is an abundant number, since it is smaller than the sum of its proper divisors (92750042).

87736390 is a wasteful number, since it uses less digits than its factorization.

87736390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253391.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 87736390 is about 9366.7705213697. The cubic root of 87736390 is about 444.3514349584.

The spelling of 87736390 in words is "eighty-seven million, seven hundred thirty-six thousand, three hundred ninety".