7287885 has 24 divisors (see below), whose sum is σ = 13781664. Its totient is φ = 3533280.

The previous prime is 7287859. The next prime is 7287899. The reversal of 7287885 is 5887827.

It is a happy number.

It is not a de Polignac number, because 7287885 - 2⁸ = 7287629 is a prime.

It is a super-2 number, since 2×7287885² = 106226535546450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7287885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6867 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (574236).

Almost surely, 2^7287885 is an apocalyptic number.

It is an amenable number.

7287885 is a deficient number, since it is larger than the sum of its proper divisors (6493779).

7287885 is a wasteful number, since it uses less digits than its factorization.

7287885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14745 (or 14742 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 7287885 is about 2699.6083049213. The cubic root of 7287885 is about 193.8803687280.

The spelling of 7287885 in words is "seven million, two hundred eighty-seven thousand, eight hundred eighty-five".