22259874 has 64 divisors (see below), whose sum is σ = 55802880. Its totient is φ = 5762880.

The previous prime is 22259873. The next prime is 22259893. The reversal of 22259874 is 47895222.

22259874 = 585² + 586² + ... + 643².

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22259873) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 31869 + ... + 32559.

It is an arithmetic number, because the mean of its divisors is an integer number (871920).

Almost surely, 2^22259874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22259874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27901440).

22259874 is an abundant number, since it is smaller than the sum of its proper divisors (33543006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22259874 is a wasteful number, since it uses less digits than its factorization.

22259874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its digits is 80640, while the sum is 39.

The square root of 22259874 is about 4718.0370918423. The cubic root of 22259874 is about 281.3029158707.

The spelling of 22259874 in words is "twenty-two million, two hundred fifty-nine thousand, eight hundred seventy-four".