22012838 has 4 divisors (see below), whose sum is σ = 33019260. Its totient is φ = 11006418.

The previous prime is 22012831. The next prime is 22012853. The reversal of 22012838 is 83821022.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5503208 + ... + 5503211.

It is an arithmetic number, because the mean of its divisors is an integer number (8254815).

Almost surely, 2^22012838 is an apocalyptic number.

22012838 is a deficient number, since it is larger than the sum of its proper divisors (11006422).

22012838 is a wasteful number, since it uses less digits than its factorization.

22012838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006421.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 22012838 is about 4691.7840956293. The cubic root of 22012838 is about 280.2584263776.

The spelling of 22012838 in words is "twenty-two million, twelve thousand, eight hundred thirty-eight".