23172266 has 24 divisors (see below), whose sum is σ = 37946880. Its totient is φ = 10607376.

The previous prime is 23172251. The next prime is 23172287. The reversal of 23172266 is 66227132.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 60311 + ... + 60693.

It is an arithmetic number, because the mean of its divisors is an integer number (1581120).

Almost surely, 2^23172266 is an apocalyptic number.

23172266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23172266 is a deficient number, since it is larger than the sum of its proper divisors (14774614).

23172266 is a wasteful number, since it uses less digits than its factorization.

23172266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 577 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 23172266 is about 4813.7579914242. The cubic root of 23172266 is about 285.0949350295.

Adding to 23172266 its reverse (66227132), we get a palindrome (89399398).

The spelling of 23172266 in words is "twenty-three million, one hundred seventy-two thousand, two hundred sixty-six".