7289636 has 12 divisors (see below), whose sum is σ = 13068300. Its totient is φ = 3555840.

The previous prime is 7289621. The next prime is 7289657. The reversal of 7289636 is 6369827.

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 4227136 = 1750^2 + 2056^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 7289593 and 7289602.

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 3 ways as a sum of consecutive naturals, for example, 22061 + ... + 22388.

It is an arithmetic number, because the mean of its divisors is an integer number (1089025).

Almost surely, 2^7289636 is an apocalyptic number.

It is an amenable number.

7289636 is a deficient number, since it is larger than the sum of its proper divisors (5778664).

7289636 is a wasteful number, since it uses less digits than its factorization.

7289636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44494 (or 44492 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 7289636 is about 2699.9325917511. The cubic root of 7289636 is about 193.8958948301.

The spelling of 7289636 in words is "seven million, two hundred eighty-nine thousand, six hundred thirty-six".