2221836 has 12 divisors (see below), whose sum is σ = 5184312. Its totient is φ = 740608.

The previous prime is 2221829. The next prime is 2221837. The reversal of 2221836 is 6381222.

2221836 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2221837) 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, 92565 + ... + 92588.

It is an arithmetic number, because the mean of its divisors is an integer number (432026).

2^2221836 is an apocalyptic number.

It is an amenable number.

2221836 is an abundant number, since it is smaller than the sum of its proper divisors (2962476).

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

2221836 is a wasteful number, since it uses less digits than its factorization.

2221836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185160 (or 185158 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 2221836 is about 1490.5824364992. The cubic root of 2221836 is about 130.4880275565.

The spelling of 2221836 in words is "two million, two hundred twenty-one thousand, eight hundred thirty-six".