23130666 has 24 divisors (see below), whose sum is σ = 53972100. Its totient is φ = 7117056.

The previous prime is 23130649. The next prime is 23130677. The reversal of 23130666 is 66603132.

It can be written as a sum of positive squares in 2 ways, for example, as 21427641 + 1703025 = 4629^2 + 1305^2 .

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, 49191 + ... + 49658.

Almost surely, 2^23130666 is an apocalyptic number.

23130666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23130666 is an abundant number, since it is smaller than the sum of its proper divisors (30841434).

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

23130666 is a wasteful number, since it uses less digits than its factorization.

23130666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98870 (or 98867 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 23130666 is about 4809.4351019636. The cubic root of 23130666 is about 284.9242273169.

Adding to 23130666 its reverse (66603132), we get a palindrome (89733798).

The spelling of 23130666 in words is "twenty-three million, one hundred thirty thousand, six hundred sixty-six".