22840212 has 24 divisors (see below), whose sum is σ = 53625376. Its totient is φ = 7566048.

The previous prime is 22840201. The next prime is 22840249. The reversal of 22840212 is 21204822.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3883 + ... + 7794.

Almost surely, 2^22840212 is an apocalyptic number.

It is an amenable number.

22840212 is an abundant number, since it is smaller than the sum of its proper divisors (30785164).

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

22840212 is a wasteful number, since it uses less digits than its factorization.

22840212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11847 (or 11845 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 22840212 is about 4779.1434378976. The cubic root of 22840212 is about 283.7265933198.

The spelling of 22840212 in words is "twenty-two million, eight hundred forty thousand, two hundred twelve".