23212530 has 48 divisors (see below), whose sum is σ = 65841984. Its totient is φ = 5627040.

The previous prime is 23212529. The next prime is 23212537. The reversal of 23212530 is 3521232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23212537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10734 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (1371708).

Almost surely, 2^23212530 is an apocalyptic number.

23212530 is an abundant number, since it is smaller than the sum of its proper divisors (42629454).

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

23212530 is a wasteful number, since it uses less digits than its factorization.

23212530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23471 (or 23468 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23212530 is about 4817.9383557700. The cubic root of 23212530 is about 285.2599659365.

Adding to 23212530 its reverse (3521232), we get a palindrome (26733762).

It can be divided in two parts, 2321 and 2530, that added together give a triangular number (4851 = T₉₈).

The spelling of 23212530 in words is "twenty-three million, two hundred twelve thousand, five hundred thirty".