23281432 has 32 divisors (see below), whose sum is σ = 47822400. Its totient is φ = 10576384.

The previous prime is 23281387. The next prime is 23281439. The reversal of 23281432 is 23418232.

It is a junction number, because it is equal to n+sod(n) for n = 23281397 and 23281406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23281439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993 + ... + 6895.

It is an arithmetic number, because the mean of its divisors is an integer number (1494450).

Almost surely, 2^23281432 is an apocalyptic number.

It is an amenable number.

23281432 is an abundant number, since it is smaller than the sum of its proper divisors (24540968).

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

23281432 is a wasteful number, since it uses less digits than its factorization.

23281432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955 (or 5951 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 23281432 is about 4825.0836262183. The cubic root of 23281432 is about 285.5419338624.

Adding to 23281432 its reverse (23418232), we get a palindrome (46699664).

The spelling of 23281432 in words is "twenty-three million, two hundred eighty-one thousand, four hundred thirty-two".