7897320 has 48 divisors (see below), whose sum is σ = 25667460. Its totient is φ = 2105856.

The previous prime is 7897283. The next prime is 7897321. The reversal of 7897320 is 237987.

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 509796 = 2718^2 + 714^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7897321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10609 + ... + 11328.

Almost surely, 2^7897320 is an apocalyptic number.

It is an amenable number.

7897320 is an abundant number, since it is smaller than the sum of its proper divisors (17770140).

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

7897320 is a wasteful number, since it uses less digits than its factorization.

7897320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21954 (or 21947 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 7897320 is about 2810.2170734660. The cubic root of 7897320 is about 199.1406461769.

The spelling of 7897320 in words is "seven million, eight hundred ninety-seven thousand, three hundred twenty".