23145272 has 8 divisors (see below), whose sum is σ = 43397400. Its totient is φ = 11572632.

The previous prime is 23145271. The next prime is 23145281. The reversal of 23145272 is 27254132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145271) 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 as a sum of consecutive naturals, namely, 1446572 + ... + 1446587.

It is an arithmetic number, because the mean of its divisors is an integer number (5424675).

Almost surely, 2^23145272 is an apocalyptic number.

It is an amenable number.

23145272 is a deficient number, since it is larger than the sum of its proper divisors (20252128).

23145272 is a wasteful number, since it uses less digits than its factorization.

23145272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893165 (or 2893161 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 23145272 is about 4810.9533358785. The cubic root of 23145272 is about 284.9841870779.

The spelling of 23145272 in words is "twenty-three million, one hundred forty-five thousand, two hundred seventy-two".