23784013 has 4 divisors (see below), whose sum is σ = 25946208. Its totient is φ = 21621820.

The previous prime is 23784011. The next prime is 23784023. The reversal of 23784013 is 31048732.

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 not a de Polignac number, because 23784013 - 2¹ = 23784011 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 (23784011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081081 + ... + 1081102.

It is an arithmetic number, because the mean of its divisors is an integer number (6486552).

Almost surely, 2^23784013 is an apocalyptic number.

It is an amenable number.

23784013 is a deficient number, since it is larger than the sum of its proper divisors (2162195).

23784013 is a wasteful number, since it uses less digits than its factorization.

23784013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162194.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 23784013 is about 4876.8855840587. The cubic root of 23784013 is about 287.5820076075.

The spelling of 23784013 in words is "twenty-three million, seven hundred eighty-four thousand, thirteen".