87799240 has 32 divisors (see below), whose sum is σ = 204363000. Its totient is φ = 33908224.

The previous prime is 87799207. The next prime is 87799241. The reversal of 87799240 is 4299778.

It can be written as a sum of positive squares in 4 ways, for example, as 87123556 + 675684 = 9334^2 + 822^2 .

It is not an unprimeable number, because it can be changed into a prime (87799241) 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, 36685 + ... + 39004.

Almost surely, 2^87799240 is an apocalyptic number.

It is an amenable number.

87799240 is an abundant number, since it is smaller than the sum of its proper divisors (116563760).

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

87799240 is a wasteful number, since it uses less digits than its factorization.

87799240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75729 (or 75725 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 87799240 is about 9370.1248657635. The cubic root of 87799240 is about 444.4575134120.

The spelling of 87799240 in words is "eighty-seven million, seven hundred ninety-nine thousand, two hundred forty".