22146544 has 40 divisors (see below), whose sum is σ = 49679360. Its totient is φ = 9367488.

The previous prime is 22146499. The next prime is 22146547. The reversal of 22146544 is 44564122.

It is a super-2 number, since 2×22146544² = 980938822287872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7597 + ... + 10099.

It is an arithmetic number, because the mean of its divisors is an integer number (1241984).

Almost surely, 2^22146544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22146544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24839680).

22146544 is an abundant number, since it is smaller than the sum of its proper divisors (27532816).

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

22146544 is a wasteful number, since it uses less digits than its factorization.

22146544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2591 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 22146544 is about 4706.0114746991. The cubic root of 22146544 is about 280.8247113692.

The spelling of 22146544 in words is "twenty-two million, one hundred forty-six thousand, five hundred forty-four".