87352640 has 56 divisors (see below), whose sum is σ = 215204040. Its totient is φ = 33732608.

The previous prime is 87352631. The next prime is 87352679. The reversal of 87352640 is 4625378.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36772096 + 50580544 = 6064^2 + 7112^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 87352640.

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 7 ways as a sum of consecutive naturals, for example, 4574 + ... + 13986.

Almost surely, 2^87352640 is an apocalyptic number.

87352640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87352640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107602020).

87352640 is an abundant number, since it is smaller than the sum of its proper divisors (127851400).

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

87352640 is a wasteful number, since it uses less digits than its factorization.

87352640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459 (or 9449 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 87352640 is about 9346.2634244922. The cubic root of 87352640 is about 443.7026388652.

The spelling of 87352640 in words is "eighty-seven million, three hundred fifty-two thousand, six hundred forty".