22704440 has 48 divisors (see below), whose sum is σ = 56163240. Its totient is φ = 8254400.

The previous prime is 22704413. The next prime is 22704443. The reversal of 22704440 is 4440722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22704443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2495 + ... + 7185.

Almost surely, 2^22704440 is an apocalyptic number.

22704440 is a gapful number since it is divisible by the number (20) 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 22704440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28081620).

22704440 is an abundant number, since it is smaller than the sum of its proper divisors (33458800).

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

22704440 is a wasteful number, since it uses less digits than its factorization.

22704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724 (or 4709 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 22704440 is about 4764.9176278295. The cubic root of 22704440 is about 283.1632781926.

The spelling of 22704440 in words is "twenty-two million, seven hundred four thousand, four hundred forty".