23228785 has 16 divisors (see below), whose sum is σ = 28801872. Its totient is φ = 17971200.

The previous prime is 23228759. The next prime is 23228801. The reversal of 23228785 is 58782232.

It can be written as a sum of positive squares in 8 ways, for example, as 732736 + 22496049 = 856^2 + 4743^2 .

It is not a de Polignac number, because 23228785 - 2⁵ = 23228753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44325 + ... + 44845.

It is an arithmetic number, because the mean of its divisors is an integer number (1800117).

Almost surely, 2^23228785 is an apocalyptic number.

It is an amenable number.

23228785 is a deficient number, since it is larger than the sum of its proper divisors (5573087).

23228785 is a wasteful number, since it uses less digits than its factorization.

23228785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its digits is 53760, while the sum is 37.

The square root of 23228785 is about 4819.6249854112. The cubic root of 23228785 is about 285.3265365747.

The spelling of 23228785 in words is "twenty-three million, two hundred twenty-eight thousand, seven hundred eighty-five".