23085820 has 12 divisors (see below), whose sum is σ = 48480264. Its totient is φ = 9234320.

The previous prime is 23085781. The next prime is 23085823. The reversal of 23085820 is 2858032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23085823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 577126 + ... + 577165.

It is an arithmetic number, because the mean of its divisors is an integer number (4040022).

Almost surely, 2^23085820 is an apocalyptic number.

23085820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23085820 is an abundant number, since it is smaller than the sum of its proper divisors (25394444).

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

23085820 is a wasteful number, since it uses less digits than its factorization.

23085820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154300 (or 1154298 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 23085820 is about 4804.7705460303. The cubic root of 23085820 is about 284.7399700678.

It can be divided in two parts, 2308 and 5820, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 23085820 in words is "twenty-three million, eighty-five thousand, eight hundred twenty".