7872286 has 8 divisors (see below), whose sum is σ = 11824704. Its totient is φ = 3930720.

The previous prime is 7872283. The next prime is 7872313. The reversal of 7872286 is 6822787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7² + 8 + 7⁸ + 2¹¹ + 2¹³ + 8⁷ + 6² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 555 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (1478088).

Almost surely, 2^7872286 is an apocalyptic number.

7872286 is a deficient number, since it is larger than the sum of its proper divisors (3952418).

7872286 is a wasteful number, since it uses less digits than its factorization.

7872286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426.

The product of its digits is 75264, while the sum is 40.

The square root of 7872286 is about 2805.7594337363. The cubic root of 7872286 is about 198.9300024010.

The spelling of 7872286 in words is "seven million, eight hundred seventy-two thousand, two hundred eighty-six".