22724435 has 4 divisors (see below), whose sum is σ = 27269328. Its totient is φ = 18179544.

The previous prime is 22724431. The next prime is 22724441. The reversal of 22724435 is 53442722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22724435 - 2² = 22724431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22724398 and 22724407.

It is not an unprimeable number, because it can be changed into a prime (22724431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2272439 + ... + 2272448.

It is an arithmetic number, because the mean of its divisors is an integer number (6817332).

Almost surely, 2^22724435 is an apocalyptic number.

22724435 is a deficient number, since it is larger than the sum of its proper divisors (4544893).

22724435 is an equidigital number, since it uses as much as digits as its factorization.

22724435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544892.

The product of its digits is 13440, while the sum is 29.

The square root of 22724435 is about 4767.0153135898. The cubic root of 22724435 is about 283.2463777757.

The spelling of 22724435 in words is "twenty-two million, seven hundred twenty-four thousand, four hundred thirty-five".