22052740 has 48 divisors (see below), whose sum is σ = 50388912. Its totient is φ = 8073216.

The previous prime is 22052707. The next prime is 22052747. The reversal of 22052740 is 4725022.

It can be written as a sum of positive squares in 8 ways, for example, as 324 + 22052416 = 18^2 + 4696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11704 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (1049769).

Almost surely, 2^22052740 is an apocalyptic number.

22052740 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 22052740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25194456).

22052740 is an abundant number, since it is smaller than the sum of its proper divisors (28336172).

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

22052740 is a wasteful number, since it uses less digits than its factorization.

22052740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22052740 is about 4696.0344973179. The cubic root of 22052740 is about 280.4276627959.

Adding to 22052740 its reverse (4725022), we get a palindrome (26777762).

The spelling of 22052740 in words is "twenty-two million, fifty-two thousand, seven hundred forty".