22040523 has 12 divisors (see below), whose sum is σ = 32152848. Its totient is φ = 14547600.

The previous prime is 22040519. The next prime is 22040531. The reversal of 22040523 is 32504022.

It is not a de Polignac number, because 22040523 - 2² = 22040519 is a prime.

It is a super-2 number, since 2×22040523² = 971569308227058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22040496 and 22040505.

It is not an unprimeable number, because it can be changed into a prime (22040503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11215 + ... + 13032.

It is an arithmetic number, because the mean of its divisors is an integer number (2679404).

Almost surely, 2^22040523 is an apocalyptic number.

22040523 is a deficient number, since it is larger than the sum of its proper divisors (10112325).

22040523 is a wasteful number, since it uses less digits than its factorization.

22040523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24354 (or 24351 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22040523 is about 4694.7335387645. The cubic root of 22040523 is about 280.3758685123.

Adding to 22040523 its reverse (32504022), we get a palindrome (54544545).

The spelling of 22040523 in words is "twenty-two million, forty thousand, five hundred twenty-three".