7915280 has 40 divisors (see below), whose sum is σ = 18546432. Its totient is φ = 3141504.

The previous prime is 7915279. The next prime is 7915283. The reversal of 7915280 is 825197.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (7915283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12737 + ... + 13343.

Almost surely, 2^7915280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7915280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9273216).

7915280 is an abundant number, since it is smaller than the sum of its proper divisors (10631152).

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

7915280 is a wasteful number, since it uses less digits than its factorization.

7915280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 7915280 is about 2813.4107414311. The cubic root of 7915280 is about 199.2914930533.

The spelling of 7915280 in words is "seven million, nine hundred fifteen thousand, two hundred eighty".