22234478 has 16 divisors (see below), whose sum is σ = 38928384. Its totient is φ = 9326040.

The previous prime is 22234463. The next prime is 22234481. The reversal of 22234478 is 87443222.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16238 + ... + 17553.

It is an arithmetic number, because the mean of its divisors is an integer number (2433024).

Almost surely, 2^22234478 is an apocalyptic number.

22234478 is a deficient number, since it is larger than the sum of its proper divisors (16693906).

22234478 is a wasteful number, since it uses less digits than its factorization.

22234478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33847.

The product of its digits is 21504, while the sum is 32.

The square root of 22234478 is about 4715.3449502661. The cubic root of 22234478 is about 281.1958968852.

Subtracting from 22234478 its sum of digits (32), we obtain a triangular number (22234446 = T₆₆₆₈).

The spelling of 22234478 in words is "twenty-two million, two hundred thirty-four thousand, four hundred seventy-eight".