64321232 has 20 divisors (see below), whose sum is σ = 131182080. Its totient is φ = 30467808.

The previous prime is 64321223. The next prime is 64321237. The reversal of 64321232 is 23212346.

It is a super-3 number, since 3×64321232³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64321198 and 64321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64321237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105488 + ... + 106095.

It is an arithmetic number, because the mean of its divisors is an integer number (6559104).

Almost surely, 2^64321232 is an apocalyptic number.

It is an amenable number.

64321232 is an abundant number, since it is smaller than the sum of its proper divisors (66860848).

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

64321232 is a wasteful number, since it uses less digits than its factorization.

64321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211610 (or 211604 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 64321232 is about 8020.0518701565. The cubic root of 64321232 is about 400.6681167620.

Adding to 64321232 its reverse (23212346), we get a palindrome (87533578).

The spelling of 64321232 in words is "sixty-four million, three hundred twenty-one thousand, two hundred thirty-two".