23826690 has 128 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 5741568.

The previous prime is 23826683. The next prime is 23826713. The reversal of 23826690 is 9662832.

It is a super-2 number, since 2×23826690² = 1135422312712200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133021 + ... + 133199.

It is an arithmetic number, because the mean of its divisors is an integer number (546750).

Almost surely, 2^23826690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23826690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34992000).

23826690 is an abundant number, since it is smaller than the sum of its proper divisors (46157310).

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

23826690 is a wasteful number, since it uses less digits than its factorization.

23826690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 23826690 is about 4881.2590588904. The cubic root of 23826690 is about 287.7539130502.

The spelling of 23826690 in words is "twenty-three million, eight hundred twenty-six thousand, six hundred ninety".