7797280 has 24 divisors (see below), whose sum is σ = 18421452. Its totient is φ = 3118848.

The previous prime is 7797247. The next prime is 7797281. The reversal of 7797280 is 827977.

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 24336 = 2788^2 + 156^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (7797281) 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, 24207 + ... + 24526.

Almost surely, 2^7797280 is an apocalyptic number.

It is an amenable number.

7797280 is an abundant number, since it is smaller than the sum of its proper divisors (10624172).

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

7797280 is a wasteful number, since it uses less digits than its factorization.

7797280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48748 (or 48740 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 7797280 is about 2792.3610081793. The cubic root of 7797280 is about 198.2961930941.

The spelling of 7797280 in words is "seven million, seven hundred ninety-seven thousand, two hundred eighty".