23166890 has 16 divisors (see below), whose sum is σ = 43895520. Its totient is φ = 8778960.

The previous prime is 23166851. The next prime is 23166893. The reversal of 23166890 is 9866132.

It is a self number, because there is not a number n which added to its sum of digits gives 23166890.

It is not an unprimeable number, because it can be changed into a prime (23166893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60776 + ... + 61155.

It is an arithmetic number, because the mean of its divisors is an integer number (2743470).

Almost surely, 2^23166890 is an apocalyptic number.

23166890 is a deficient number, since it is larger than the sum of its proper divisors (20728630).

23166890 is a wasteful number, since it uses less digits than its factorization.

23166890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121957.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23166890 is about 4813.1995595446. The cubic root of 23166890 is about 285.0728858420.

The spelling of 23166890 in words is "twenty-three million, one hundred sixty-six thousand, eight hundred ninety".