23445342 has 32 divisors (see below), whose sum is σ = 52738560. Its totient is φ = 7719480.

The previous prime is 23445307. The next prime is 23445347. The reversal of 23445342 is 24354432.

It is a super-2 number, since 2×23445342² = 1099368122993928, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23445347) 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 15 ways as a sum of consecutive naturals, for example, 1867 + ... + 7097.

It is an arithmetic number, because the mean of its divisors is an integer number (1648080).

Almost surely, 2^23445342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23445342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26369280).

23445342 is an abundant number, since it is smaller than the sum of its proper divisors (29293218).

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

23445342 is a wasteful number, since it uses less digits than its factorization.

23445342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325 (or 5319 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 23445342 is about 4842.0390332999. The cubic root of 23445342 is about 286.2104747648.

Adding to 23445342 its reverse (24354432), we get a palindrome (47799774).

The spelling of 23445342 in words is "twenty-three million, four hundred forty-five thousand, three hundred forty-two".