22128814 has 4 divisors (see below), whose sum is σ = 33193224. Its totient is φ = 11064406.

The previous prime is 22128811. The next prime is 22128839. The reversal of 22128814 is 41882122.

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 (22128811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5532202 + ... + 5532205.

It is an arithmetic number, because the mean of its divisors is an integer number (8298306).

Almost surely, 2^22128814 is an apocalyptic number.

22128814 is a deficient number, since it is larger than the sum of its proper divisors (11064410).

22128814 is a wasteful number, since it uses less digits than its factorization.

22128814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11064409.

The product of its digits is 2048, while the sum is 28.

The square root of 22128814 is about 4704.1273367119. The cubic root of 22128814 is about 280.7497508183.

It can be divided in two parts, 2212 and 8814, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 22128814 in words is "twenty-two million, one hundred twenty-eight thousand, eight hundred fourteen".