23967438 has 24 divisors (see below), whose sum is σ = 52690344. Its totient is φ = 7262640.

The previous prime is 23967431. The next prime is 23967443. The reversal of 23967438 is 83476932.

It is a self number, because there is not a number n which added to its sum of digits gives 23967438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23967431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15781 + ... + 17232.

It is an arithmetic number, because the mean of its divisors is an integer number (2195431).

Almost surely, 2^23967438 is an apocalyptic number.

23967438 is an abundant number, since it is smaller than the sum of its proper divisors (28722906).

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

23967438 is a wasteful number, since it uses less digits than its factorization.

23967438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33040 (or 33029 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 23967438 is about 4895.6550123553. The cubic root of 23967438 is about 288.3194035467.

The spelling of 23967438 in words is "twenty-three million, nine hundred sixty-seven thousand, four hundred thirty-eight".