8011638 has 12 divisors (see below), whose sum is σ = 17358588. Its totient is φ = 2670540.

The previous prime is 8011621. The next prime is 8011643. The reversal of 8011638 is 8361108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222528 + ... + 222563.

It is an arithmetic number, because the mean of its divisors is an integer number (1446549).

Almost surely, 2^8011638 is an apocalyptic number.

8011638 is an abundant number, since it is smaller than the sum of its proper divisors (9346950).

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

8011638 is a wasteful number, since it uses less digits than its factorization.

8011638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445099 (or 445096 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8011638 is about 2830.4837042456. The cubic root of 8011638 is about 200.0969363425.

It can be divided in two parts, 8011 and 638, that added together give a square (8649 = 93²).

The spelling of 8011638 in words is "eight million, eleven thousand, six hundred thirty-eight".