23091066 has 48 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 7115904.

The previous prime is 23091059. The next prime is 23091067. The reversal of 23091066 is 66019032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23091067) 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 23 ways as a sum of consecutive naturals, for example, 17415 + ... + 18693.

It is an arithmetic number, because the mean of its divisors is an integer number (1123200).

Almost surely, 2^23091066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23091066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26956800).

23091066 is an abundant number, since it is smaller than the sum of its proper divisors (30822534).

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

23091066 is a wasteful number, since it uses less digits than its factorization.

23091066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 23091066 is about 4805.3164307879. The cubic root of 23091066 is about 284.7615364485.

It can be divided in two parts, 2309 and 1066, that added together give a cube (3375 = 15³).

The spelling of 23091066 in words is "twenty-three million, ninety-one thousand, sixty-six".