23320542 has 16 divisors (see below), whose sum is σ = 53304192. Its totient is φ = 6663000.

The previous prime is 23320537. The next prime is 23320547. The reversal of 23320542 is 24502332.

It is an interprime number because it is at equal distance from previous prime (23320537) and next prime (23320547).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277584 + ... + 277667.

It is an arithmetic number, because the mean of its divisors is an integer number (3331512).

Almost surely, 2^23320542 is an apocalyptic number.

23320542 is an abundant number, since it is smaller than the sum of its proper divisors (29983650).

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

23320542 is a wasteful number, since it uses less digits than its factorization.

23320542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555263.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 23320542 is about 4829.1347050999. The cubic root of 23320542 is about 285.7017364250.

Adding to 23320542 its reverse (24502332), we get a palindrome (47822874).

The spelling of 23320542 in words is "twenty-three million, three hundred twenty thousand, five hundred forty-two".