87326440 has 32 divisors (see below), whose sum is σ = 198297000. Its totient is φ = 34608384.

The previous prime is 87326429. The next prime is 87326443. The reversal of 87326440 is 4462378.

It can be written as a sum of positive squares in 4 ways, for example, as 68194564 + 19131876 = 8258^2 + 4374^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87326396 and 87326405.

It is not an unprimeable number, because it can be changed into a prime (87326443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5655 + ... + 14374.

Almost surely, 2^87326440 is an apocalyptic number.

It is an amenable number.

87326440 is an abundant number, since it is smaller than the sum of its proper divisors (110970560).

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

87326440 is a wasteful number, since it uses less digits than its factorization.

87326440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20149 (or 20145 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 87326440 is about 9344.8616897202. The cubic root of 87326440 is about 443.6582739722.

The spelling of 87326440 in words is "eighty-seven million, three hundred twenty-six thousand, four hundred forty".