22520243 has 8 divisors (see below), whose sum is σ = 23647488. Its totient is φ = 21405384.

The previous prime is 22520231. The next prime is 22520249. The reversal of 22520243 is 34202522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22520243 - 2⁴ = 22520227 is a prime.

It is a super-2 number, since 2×22520243² = 1014322689558098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22520249) 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, 746 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (2955936).

Almost surely, 2^22520243 is an apocalyptic number.

22520243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22520243 is a deficient number, since it is larger than the sum of its proper divisors (1127245).

22520243 is a wasteful number, since it uses less digits than its factorization.

22520243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22520243 is about 4745.5498100852. The cubic root of 22520243 is about 282.3954472525.

Adding to 22520243 its reverse (34202522), we get a palindrome (56722765).

The spelling of 22520243 in words is "twenty-two million, five hundred twenty thousand, two hundred forty-three".