23185828 has 24 divisors (see below), whose sum is σ = 42699384. Its totient is φ = 11001600.

The previous prime is 23185823. The next prime is 23185829. The reversal of 23185828 is 82858132.

It can be written as a sum of positive squares in 4 ways, for example, as 6718464 + 16467364 = 2592^2 + 4058^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23185823) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4158 + ... + 7978.

It is an arithmetic number, because the mean of its divisors is an integer number (1779141).

Almost surely, 2^23185828 is an apocalyptic number.

It is an amenable number.

23185828 is a deficient number, since it is larger than the sum of its proper divisors (19513556).

23185828 is a wasteful number, since it uses less digits than its factorization.

23185828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903 (or 3901 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 23185828 is about 4815.1664561051. The cubic root of 23185828 is about 285.1505432215.

The spelling of 23185828 in words is "twenty-three million, one hundred eighty-five thousand, eight hundred twenty-eight".