22872305 has 4 divisors (see below), whose sum is σ = 27446772. Its totient is φ = 18297840.

The previous prime is 22872299. The next prime is 22872331. The reversal of 22872305 is 50327822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10817521 + 12054784 = 3289^2 + 3472^2 .

It is not a de Polignac number, because 22872305 - 2⁸ = 22872049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287226 + ... + 2287235.

It is an arithmetic number, because the mean of its divisors is an integer number (6861693).

Almost surely, 2^22872305 is an apocalyptic number.

It is an amenable number.

22872305 is a deficient number, since it is larger than the sum of its proper divisors (4574467).

22872305 is an equidigital number, since it uses as much as digits as its factorization.

22872305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574466.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 22872305 is about 4782.4998693152. The cubic root of 22872305 is about 283.8594201091.

The spelling of 22872305 in words is "twenty-two million, eight hundred seventy-two thousand, three hundred five".