23020686 has 80 divisors (see below), whose sum is σ = 58910544. Its totient is φ = 6656256.

The previous prime is 23020681. The next prime is 23020687. The reversal of 23020686 is 68602032.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020681) 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 39 ways as a sum of consecutive naturals, for example, 35481 + ... + 36123.

Almost surely, 2^23020686 is an apocalyptic number.

23020686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23020686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29455272).

23020686 is an abundant number, since it is smaller than the sum of its proper divisors (35889858).

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

23020686 is a wasteful number, since it uses less digits than its factorization.

23020686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 23020686 is about 4797.9877031939. The cubic root of 23020686 is about 284.4719307455.

The spelling of 23020686 in words is "twenty-three million, twenty thousand, six hundred eighty-six".