87523380 has 72 divisors (see below), whose sum is σ = 303418752. Its totient is φ = 20005056.

The previous prime is 87523369. The next prime is 87523411. The reversal of 87523380 is 8332578.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 33472 + ... + 35991.

Almost surely, 2^87523380 is an apocalyptic number.

It is an amenable number.

87523380 is an abundant number, since it is smaller than the sum of its proper divisors (215895372).

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

87523380 is a wasteful number, since it uses less digits than its factorization.

87523380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69485 (or 69480 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 87523380 is about 9355.3930970323. The cubic root of 87523380 is about 443.9915386749.

The spelling of 87523380 in words is "eighty-seven million, five hundred twenty-three thousand, three hundred eighty".