22413745 has 4 divisors (see below), whose sum is σ = 26896500. Its totient is φ = 17930992.

The previous prime is 22413739. The next prime is 22413761. The reversal of 22413745 is 54731422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54731422 = 2 ⋅27365711.

It can be written as a sum of positive squares in 2 ways, for example, as 4359744 + 18054001 = 2088^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 22413745 - 2⁹ = 22413233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241370 + ... + 2241379.

It is an arithmetic number, because the mean of its divisors is an integer number (6724125).

Almost surely, 2^22413745 is an apocalyptic number.

It is an amenable number.

22413745 is a deficient number, since it is larger than the sum of its proper divisors (4482755).

22413745 is an equidigital number, since it uses as much as digits as its factorization.

22413745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482754.

The product of its digits is 6720, while the sum is 28.

The square root of 22413745 is about 4734.3156844469. The cubic root of 22413745 is about 281.9495953035.

The spelling of 22413745 in words is "twenty-two million, four hundred thirteen thousand, seven hundred forty-five".