23213724 has 24 divisors (see below), whose sum is σ = 54582528. Its totient is φ = 7678320.

The previous prime is 23213719. The next prime is 23213731. The reversal of 23213724 is 42731232.

It is a junction number, because it is equal to n+sod(n) for n = 23213694 and 23213703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5812 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (2274272).

Almost surely, 2^23213724 is an apocalyptic number.

It is an amenable number.

23213724 is an abundant number, since it is smaller than the sum of its proper divisors (31368804).

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

23213724 is a wasteful number, since it uses less digits than its factorization.

23213724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14905 (or 14903 counting only the distinct ones).

The product of its digits is 2016, while the sum is 24.

The square root of 23213724 is about 4818.0622660983. The cubic root of 23213724 is about 285.2648568949.

Adding to 23213724 its reverse (42731232), we get a palindrome (65944956).

The spelling of 23213724 in words is "twenty-three million, two hundred thirteen thousand, seven hundred twenty-four".