23946821 has 4 divisors (see below), whose sum is σ = 25207200. Its totient is φ = 22686444.

The previous prime is 23946803. The next prime is 23946827. The reversal of 23946821 is 12864932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23946821 - 2¹⁴ = 23930437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23946827) 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 3 ways as a sum of consecutive naturals, for example, 630161 + ... + 630198.

It is an arithmetic number, because the mean of its divisors is an integer number (6301800).

Almost surely, 2^23946821 is an apocalyptic number.

It is an amenable number.

23946821 is a deficient number, since it is larger than the sum of its proper divisors (1260379).

23946821 is a wasteful number, since it uses less digits than its factorization.

23946821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260378.

The product of its digits is 20736, while the sum is 35.

The square root of 23946821 is about 4893.5489166861. The cubic root of 23946821 is about 288.2367082053.

The spelling of 23946821 in words is "twenty-three million, nine hundred forty-six thousand, eight hundred twenty-one".