22190854 has 16 divisors (see below), whose sum is σ = 39269376. Its totient is φ = 9203400.

The previous prime is 22190821. The next prime is 22190893. The reversal of 22190854 is 45809122.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 25132 + ... + 25999.

It is an arithmetic number, because the mean of its divisors is an integer number (2454336).

Almost surely, 2^22190854 is an apocalyptic number.

22190854 is a deficient number, since it is larger than the sum of its proper divisors (17078522).

22190854 is a wasteful number, since it uses less digits than its factorization.

22190854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51171.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 22190854 is about 4710.7169305744. The cubic root of 22190854 is about 281.0118745589.

Adding to 22190854 its reverse (45809122), we get a palindrome (67999976).

The spelling of 22190854 in words is "twenty-two million, one hundred ninety thousand, eight hundred fifty-four".