22928705 has 8 divisors (see below), whose sum is σ = 28463400. Its totient is φ = 17710336.

The previous prime is 22928693. The next prime is 22928729. The reversal of 22928705 is 50782922.

It can be written as a sum of positive squares in 4 ways, for example, as 1324801 + 21603904 = 1151^2 + 4648^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22928705 - 2⁸ = 22928449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78920 + ... + 79209.

It is an arithmetic number, because the mean of its divisors is an integer number (3557925).

Almost surely, 2^22928705 is an apocalyptic number.

It is an amenable number.

22928705 is a deficient number, since it is larger than the sum of its proper divisors (5534695).

22928705 is a wasteful number, since it uses less digits than its factorization.

22928705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158163.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 22928705 is about 4788.3927366080. The cubic root of 22928705 is about 284.0925481951.

The spelling of 22928705 in words is "twenty-two million, nine hundred twenty-eight thousand, seven hundred five".