8121936 has 40 divisors (see below), whose sum is σ = 21498624. Its totient is φ = 2640640.

The previous prime is 8121923. The next prime is 8121947. The reversal of 8121936 is 6391218.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96 + ... + 4031.

Almost surely, 2^8121936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8121936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10749312).

8121936 is an abundant number, since it is smaller than the sum of its proper divisors (13376688).

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

8121936 is a wasteful number, since it uses less digits than its factorization.

8121936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179 (or 4173 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 8121936 is about 2849.9010509139. The cubic root of 8121936 is about 201.0110139753.

The spelling of 8121936 in words is "eight million, one hundred twenty-one thousand, nine hundred thirty-six".