22247946 has 80 divisors (see below), whose sum is σ = 59520384. Its totient is φ = 6073056.

The previous prime is 22247933. The next prime is 22247947. The reversal of 22247946 is 64974222.

It is a super-2 number, since 2×22247946² = 989942202437832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22247946.

It is not an unprimeable number, because it can be changed into a prime (22247947) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25656 + ... + 26508.

Almost surely, 2^22247946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22247946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29760192).

22247946 is an abundant number, since it is smaller than the sum of its proper divisors (37272438).

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

22247946 is a wasteful number, since it uses less digits than its factorization.

22247946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 888 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 22247946 is about 4716.7728374388. The cubic root of 22247946 is about 281.2526613082.

The spelling of 22247946 in words is "twenty-two million, two hundred forty-seven thousand, nine hundred forty-six".