22429823 has 16 divisors (see below), whose sum is σ = 25804800. Its totient is φ = 19323360.

The previous prime is 22429819. The next prime is 22429831. The reversal of 22429823 is 32892422.

It is not a de Polignac number, because 22429823 - 2² = 22429819 is a prime.

It is a super-2 number, since 2×22429823² = 1006193919622658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22429823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22429873) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16898 + ... + 18176.

It is an arithmetic number, because the mean of its divisors is an integer number (1612800).

Almost surely, 2^22429823 is an apocalyptic number.

22429823 is a deficient number, since it is larger than the sum of its proper divisors (3374977).

22429823 is a wasteful number, since it uses less digits than its factorization.

22429823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its digits is 13824, while the sum is 32.

The square root of 22429823 is about 4736.0134079202. The cubic root of 22429823 is about 282.0169959409.

It can be divided in two parts, 2242982 and 3, that multiplied together give a triangular number (6728946 = T₃₆₆₈).

The spelling of 22429823 in words is "twenty-two million, four hundred twenty-nine thousand, eight hundred twenty-three".