23266421 has 8 divisors (see below), whose sum is σ = 24703704. Its totient is φ = 21836800.

The previous prime is 23266391. The next prime is 23266423. The reversal of 23266421 is 12466232.

It can be written as a sum of positive squares in 4 ways, for example, as 19483396 + 3783025 = 4414^2 + 1945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23266421 - 2⁶ = 23266357 is a prime.

It is a super-2 number, since 2×23266421² = 1082652692298482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23266423) 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 in 7 ways as a sum of consecutive naturals, for example, 5111 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (3087963).

Almost surely, 2^23266421 is an apocalyptic number.

It is an amenable number.

23266421 is a deficient number, since it is larger than the sum of its proper divisors (1437283).

23266421 is a wasteful number, since it uses less digits than its factorization.

23266421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831.

The product of its digits is 3456, while the sum is 26.

The square root of 23266421 is about 4823.5278583211. The cubic root of 23266421 is about 285.4805517345.

The spelling of 23266421 in words is "twenty-three million, two hundred sixty-six thousand, four hundred twenty-one".