232401645 has 48 divisors (see below), whose sum is σ = 487468800. Its totient is φ = 99988992.

The previous prime is 232401641. The next prime is 232401671. The reversal of 232401645 is 546104232.

It is not a de Polignac number, because 232401645 - 2² = 232401641 is a prime.

It is a super-3 number, since 3×232401645³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232401641) 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 47 ways as a sum of consecutive naturals, for example, 16345 + ... + 27054.

It is an arithmetic number, because the mean of its divisors is an integer number (10155600).

Almost surely, 2^232401645 is an apocalyptic number.

It is an amenable number.

232401645 is an abundant number, since it is smaller than the sum of its proper divisors (255067155).

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

232401645 is a wasteful number, since it uses less digits than its factorization.

232401645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43434 (or 43431 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 232401645 is about 15244.7251533112. The cubic root of 232401645 is about 614.8177528598.

Adding to 232401645 its reverse (546104232), we get a palindrome (778505877).

The spelling of 232401645 in words is "two hundred thirty-two million, four hundred one thousand, six hundred forty-five".