23622261 has 16 divisors (see below), whose sum is σ = 34017984. Its totient is φ = 14494464.

The previous prime is 23622251. The next prime is 23622271. The reversal of 23622261 is 16222632.

It is an interprime number because it is at equal distance from previous prime (23622251) and next prime (23622271).

It is not a de Polignac number, because 23622261 - 2⁵ = 23622229 is a prime.

It is a super-2 number, since 2×23622261² = 1116022429504242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23622241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17565 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (2126124).

Almost surely, 2^23622261 is an apocalyptic number.

It is an amenable number.

23622261 is a deficient number, since it is larger than the sum of its proper divisors (10395723).

23622261 is a wasteful number, since it uses less digits than its factorization.

23622261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its digits is 1728, while the sum is 24.

The square root of 23622261 is about 4860.2737577219. The cubic root of 23622261 is about 286.9285880592.

Adding to 23622261 its reverse (16222632), we get a palindrome (39844893).

It can be divided in two parts, 2 and 3622261, that added together give a palindrome (3622263).

The spelling of 23622261 in words is "twenty-three million, six hundred twenty-two thousand, two hundred sixty-one".