7283638 has 4 divisors (see below), whose sum is σ = 10925460. Its totient is φ = 3641818.

The previous prime is 7283623. The next prime is 7283651. The reversal of 7283638 is 8363827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8363827 = 83 ⋅100769.

It is a junction number, because it is equal to n+sod(n) for n = 7283597 and 7283606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820908 + ... + 1820911.

It is an arithmetic number, because the mean of its divisors is an integer number (2731365).

Almost surely, 2^7283638 is an apocalyptic number.

7283638 is a deficient number, since it is larger than the sum of its proper divisors (3641822).

7283638 is a wasteful number, since it uses less digits than its factorization.

7283638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641821.

The product of its digits is 48384, while the sum is 37.

The square root of 7283638 is about 2698.8215946965. The cubic root of 7283638 is about 193.8427002812.

It can be divided in two parts, 7283 and 638, that added together give a square (7921 = 89²).

The spelling of 7283638 in words is "seven million, two hundred eighty-three thousand, six hundred thirty-eight".