8370720 has 72 divisors (see below), whose sum is σ = 28569996. Its totient is φ = 2231808.

The previous prime is 8370679. The next prime is 8370721. The reversal of 8370720 is 270738.

It can be written as a sum of positive squares in 2 ways, for example, as 8363664 + 7056 = 2892^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8370721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467 + ... + 4346.

Almost surely, 2^8370720 is an apocalyptic number.

8370720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8370720 is an abundant number, since it is smaller than the sum of its proper divisors (20199276).

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

8370720 is a wasteful number, since it uses less digits than its factorization.

8370720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834 (or 5823 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 8370720 is about 2893.2196598254. The cubic root of 8370720 is about 203.0428052453.

The spelling of 8370720 in words is "eight million, three hundred seventy thousand, seven hundred twenty".