22447040 has 112 divisors (see below), whose sum is σ = 66714624. Its totient is φ = 6988800.

The previous prime is 22447027. The next prime is 22447079. The reversal of 22447040 is 4074422.

It is a tau number, because it is divible by the number of its divisors (112).

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 22446997 and 22447015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24185 + ... + 25095.

Almost surely, 2^22447040 is an apocalyptic number.

22447040 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 22447040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33357312).

22447040 is an abundant number, since it is smaller than the sum of its proper divisors (44267584).

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

22447040 is a wasteful number, since it uses less digits than its factorization.

22447040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 936 counting only the distinct ones).

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

The square root of 22447040 is about 4737.8307272422. The cubic root of 22447040 is about 282.0891356810.

The spelling of 22447040 in words is "twenty-two million, four hundred forty-seven thousand, forty".