8320264440 has 64 divisors (see below), whose sum is σ = 26429081760. Its totient is φ = 2088222720.

The previous prime is 8320264391. The next prime is 8320264487. The reversal of 8320264440 is 444620238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037241 + ... + 2041320.

Almost surely, 2^8320264440 is an apocalyptic number.

It is an amenable number.

8320264440 is an abundant number, since it is smaller than the sum of its proper divisors (18108817320).

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

8320264440 is a wasteful number, since it uses less digits than its factorization.

8320264440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078592 (or 4078588 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 8320264440 is about 91215.4835540546. The cubic root of 8320264440 is about 2026.3402753514.

Adding to 8320264440 its reverse (444620238), we get a palindrome (8764884678).

The spelling of 8320264440 in words is "eight billion, three hundred twenty million, two hundred sixty-four thousand, four hundred forty".