7286638 has 8 divisors (see below), whose sum is σ = 10944288. Its totient is φ = 3638544.

The previous prime is 7286621. The next prime is 7286681. The reversal of 7286638 is 8366827.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7286638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (1368036).

Almost surely, 2^7286638 is an apocalyptic number.

7286638 is a deficient number, since it is larger than the sum of its proper divisors (3657650).

7286638 is a wasteful number, since it uses less digits than its factorization.

7286638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778.

The product of its digits is 96768, while the sum is 40.

The square root of 7286638 is about 2699.3773356091. The cubic root of 7286638 is about 193.8693100733.

The spelling of 7286638 in words is "seven million, two hundred eighty-six thousand, six hundred thirty-eight".