23075821 has 8 divisors (see below), whose sum is σ = 23914880. Its totient is φ = 22250592.

The previous prime is 23075813. The next prime is 23075839. The reversal of 23075821 is 12857032.

23075821 is a nontrivial binomial coefficient, being equal to C(6794, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23075821 - 2³ = 23075813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23075821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23075881) 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 7 ways as a sum of consecutive naturals, for example, 1 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (2989360).

Almost surely, 2^23075821 is an apocalyptic number.

23075821 is the 6793-rd triangular number and also the 3397-th hexagonal number.

23075821 is the 2265-th centered nonagonal number.

It is an amenable number.

23075821 is a deficient number, since it is larger than the sum of its proper divisors (839059).

23075821 is an equidigital number, since it uses as much as digits as its factorization.

23075821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6915.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 23075821 is about 4803.7299049801. The cubic root of 23075821 is about 284.6988549863.

It can be divided in two parts, 2307 and 5821, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 23075821 in words is "twenty-three million, seventy-five thousand, eight hundred twenty-one".