22740415 has 4 divisors (see below), whose sum is σ = 27288504. Its totient is φ = 18192328.

The previous prime is 22740409. The next prime is 22740427. The reversal of 22740415 is 51404722.

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 22740415 - 2⁷ = 22740287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22740415.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2274037 + ... + 2274046.

It is an arithmetic number, because the mean of its divisors is an integer number (6822126).

Almost surely, 2^22740415 is an apocalyptic number.

22740415 is a deficient number, since it is larger than the sum of its proper divisors (4548089).

22740415 is an equidigital number, since it uses as much as digits as its factorization.

22740415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548088.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 22740415 is about 4768.6911202132. The cubic root of 22740415 is about 283.3127559066.

The spelling of 22740415 in words is "twenty-two million, seven hundred forty thousand, four hundred fifteen".