7242880 has 32 divisors (see below), whose sum is σ = 17316540. Its totient is φ = 2896896.

The previous prime is 7242863. The next prime is 7242887. The reversal of 7242880 is 882427.

It can be written as a sum of positive squares in 2 ways, for example, as 6843456 + 399424 = 2616^2 + 632^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (7242887) 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, 5019 + ... + 6298.

Almost surely, 2^7242880 is an apocalyptic number.

It is an amenable number.

7242880 is an abundant number, since it is smaller than the sum of its proper divisors (10073660).

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

7242880 is a wasteful number, since it uses less digits than its factorization.

7242880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11336 (or 11324 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 7242880 is about 2691.2599279891. The cubic root of 7242880 is about 193.4804534825.

The spelling of 7242880 in words is "seven million, two hundred forty-two thousand, eight hundred eighty".