22394736 has 120 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 5902848.

The previous prime is 22394717. The next prime is 22394759. The reversal of 22394736 is 63749322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22394736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12250 + ... + 13958.

It is an arithmetic number, because the mean of its divisors is an integer number (643188).

Almost surely, 2^22394736 is an apocalyptic number.

22394736 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22394736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38591280).

22394736 is an abundant number, since it is smaller than the sum of its proper divisors (54787824).

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

22394736 is a wasteful number, since it uses less digits than its factorization.

22394736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743 (or 1734 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 22394736 is about 4732.3076823047. The cubic root of 22394736 is about 281.8698660166.

The spelling of 22394736 in words is "twenty-two million, three hundred ninety-four thousand, seven hundred thirty-six".