7312638 has 8 divisors (see below), whose sum is σ = 14625288. Its totient is φ = 2437544.

The previous prime is 7312633. The next prime is 7312639. The reversal of 7312638 is 8362137.

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

7312638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609381 + ... + 609392.

It is an arithmetic number, because the mean of its divisors is an integer number (1828161).

Almost surely, 2^7312638 is an apocalyptic number.

7312638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7312638 is a wasteful number, since it uses less digits than its factorization.

7312638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218778.

The product of its digits is 6048, while the sum is 30.

The square root of 7312638 is about 2704.1889726866. The cubic root of 7312638 is about 194.0996229038.

The spelling of 7312638 in words is "seven million, three hundred twelve thousand, six hundred thirty-eight".