23081644 has 6 divisors (see below), whose sum is σ = 40392884. Its totient is φ = 11540820.

The previous prime is 23081633. The next prime is 23081657. The reversal of 23081644 is 44618032.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2885202 + ... + 2885209.

Almost surely, 2^23081644 is an apocalyptic number.

It is an amenable number.

23081644 is a deficient number, since it is larger than the sum of its proper divisors (17311240).

23081644 is a wasteful number, since it uses less digits than its factorization.

23081644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770415 (or 5770413 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 23081644 is about 4804.3359582777. The cubic root of 23081644 is about 284.7228001367.

Adding to 23081644 its reverse (44618032), we get a palindrome (67699676).

It can be divided in two parts, 230816 and 44, that added together give a triangular number (230860 = T₆₇₉).

The spelling of 23081644 in words is "twenty-three million, eighty-one thousand, six hundred forty-four".