23003656 has 32 divisors (see below), whose sum is σ = 46652760. Its totient is φ = 10570752.

The previous prime is 23003653. The next prime is 23003683. The reversal of 23003656 is 65630032.

It can be written as a sum of positive squares in 4 ways, for example, as 17556100 + 5447556 = 4190^2 + 2334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23003656.

It is not an unprimeable number, because it can be changed into a prime (23003653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38496 + ... + 39088.

Almost surely, 2^23003656 is an apocalyptic number.

23003656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23003656 is an abundant number, since it is smaller than the sum of its proper divisors (23649104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23003656 is a wasteful number, since it uses less digits than its factorization.

23003656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 23003656 is about 4796.2126725157. The cubic root of 23003656 is about 284.4017655603.

Adding to 23003656 its reverse (65630032), we get a palindrome (88633688).

The spelling of 23003656 in words is "twenty-three million, three thousand, six hundred fifty-six".