23261644 has 24 divisors (see below), whose sum is σ = 49260960. Its totient is φ = 9382656.

The previous prime is 23261633. The next prime is 23261653. The reversal of 23261644 is 44616232.

It is a super-2 number, since 2×23261644² = 1082208163165472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23959 + ... + 24910.

It is an arithmetic number, because the mean of its divisors is an integer number (2052540).

Almost surely, 2^23261644 is an apocalyptic number.

It is an amenable number.

23261644 is an abundant number, since it is smaller than the sum of its proper divisors (25999316).

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

23261644 is a wasteful number, since it uses less digits than its factorization.

23261644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48897 (or 48895 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 23261644 is about 4823.0326559127. The cubic root of 23261644 is about 285.4610123600.

Adding to 23261644 its reverse (44616232), we get a palindrome (67877876).

The spelling of 23261644 in words is "twenty-three million, two hundred sixty-one thousand, six hundred forty-four".