8130638 has 8 divisors (see below), whose sum is σ = 12726288. Its totient is φ = 3888544.

The previous prime is 8130631. The next prime is 8130673. The reversal of 8130638 is 8360318.

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

It is a super-2 number, since 2×8130638² = 132214548574088, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8130638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130631) 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, 88331 + ... + 88422.

It is an arithmetic number, because the mean of its divisors is an integer number (1590786).

Almost surely, 2^8130638 is an apocalyptic number.

8130638 is a deficient number, since it is larger than the sum of its proper divisors (4595650).

8130638 is a wasteful number, since it uses less digits than its factorization.

8130638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176778.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8130638 is about 2851.4273618663. The cubic root of 8130638 is about 201.0827773869.

The spelling of 8130638 in words is "eight million, one hundred thirty thousand, six hundred thirty-eight".