22740423 has 16 divisors (see below), whose sum is σ = 30890496. Its totient is φ = 14878080.

The previous prime is 22740409. The next prime is 22740427. The reversal of 22740423 is 32404722.

It is not a de Polignac number, because 22740423 - 2⁸ = 22740167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22740393 and 22740402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22740427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67311 + ... + 67647.

It is an arithmetic number, because the mean of its divisors is an integer number (1930656).

Almost surely, 2^22740423 is an apocalyptic number.

22740423 is a deficient number, since it is larger than the sum of its proper divisors (8150073).

22740423 is a wasteful number, since it uses less digits than its factorization.

22740423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 22740423 is about 4768.6919590177. The cubic root of 22740423 is about 283.3127891294.

The spelling of 22740423 in words is "twenty-two million, seven hundred forty thousand, four hundred twenty-three".