22400334 has 64 divisors (see below), whose sum is σ = 55630080. Its totient is φ = 6622560.

The previous prime is 22400333. The next prime is 22400369. The reversal of 22400334 is 43300422.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25104 + ... + 25980.

It is an arithmetic number, because the mean of its divisors is an integer number (869220).

Almost surely, 2^22400334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22400334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27815040).

22400334 is an abundant number, since it is smaller than the sum of its proper divisors (33229746).

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

22400334 is a wasteful number, since it uses less digits than its factorization.

22400334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22400334 is about 4732.8991115383. The cubic root of 22400334 is about 281.8933503457.

Adding to 22400334 its reverse (43300422), we get a palindrome (65700756).

The spelling of 22400334 in words is "twenty-two million, four hundred thousand, three hundred thirty-four".