8372720 has 20 divisors (see below), whose sum is σ = 19466760. Its totient is φ = 3349056.

The previous prime is 8372717. The next prime is 8372723. The reversal of 8372720 is 272738.

It is an interprime number because it is at equal distance from previous prime (8372717) and next prime (8372723).

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8372723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52250 + ... + 52409.

It is an arithmetic number, because the mean of its divisors is an integer number (973338).

Almost surely, 2^8372720 is an apocalyptic number.

8372720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8372720 is an abundant number, since it is smaller than the sum of its proper divisors (11094040).

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

8372720 is a wasteful number, since it uses less digits than its factorization.

8372720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104672 (or 104666 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 8372720 is about 2893.5652748815. The cubic root of 8372720 is about 203.0589748330.

The spelling of 8372720 in words is "eight million, three hundred seventy-two thousand, seven hundred twenty".