23145284 has 18 divisors (see below), whose sum is σ = 41149710. Its totient is φ = 11391072.

The previous prime is 23145281. The next prime is 23145293. The reversal of 23145284 is 48254132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 1149184 = 4690^2 + 1072^2 .

It is not an unprimeable number, because it can be changed into a prime (23145281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17312 + ... + 18600.

It is an arithmetic number, because the mean of its divisors is an integer number (2286095).

Almost surely, 2^23145284 is an apocalyptic number.

It is an amenable number.

23145284 is a deficient number, since it is larger than the sum of its proper divisors (18004426).

23145284 is a wasteful number, since it uses less digits than its factorization.

23145284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1358 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 23145284 is about 4810.9545830324. The cubic root of 23145284 is about 284.9842363293.

The spelling of 23145284 in words is "twenty-three million, one hundred forty-five thousand, two hundred eighty-four".