23220342 has 12 divisors (see below), whose sum is σ = 50310780. Its totient is φ = 7740108.

The previous prime is 23220319. The next prime is 23220347. The reversal of 23220342 is 24302232.

23220342 is a `hidden beast` number, since 2 + 322 + 0 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1290019 = 23220342 / (2 + 3 + 2 + 2 + 0 + 3 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644992 + ... + 645027.

It is an arithmetic number, because the mean of its divisors is an integer number (4192565).

Almost surely, 2^23220342 is an apocalyptic number.

23220342 is an abundant number, since it is smaller than the sum of its proper divisors (27090438).

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

23220342 is a wasteful number, since it uses less digits than its factorization.

23220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290027 (or 1290024 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23220342 is about 4818.7490077820. The cubic root of 23220342 is about 285.2919630362.

Adding to 23220342 its reverse (24302232), we get a palindrome (47522574).

The spelling of 23220342 in words is "twenty-three million, two hundred twenty thousand, three hundred forty-two".