64442232 has 48 divisors (see below), whose sum is σ = 174905640. Its totient is φ = 21434688.

The previous prime is 64442221. The next prime is 64442237. The reversal of 64442232 is 23224446.

It is a super-3 number, since 3×64442232³ (a number of 24 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 64442196 and 64442205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64442237) 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 11 ways as a sum of consecutive naturals, for example, 56823 + ... + 57945.

Almost surely, 2^64442232 is an apocalyptic number.

It is an amenable number.

64442232 is an abundant number, since it is smaller than the sum of its proper divisors (110463408).

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

64442232 is a wasteful number, since it uses less digits than its factorization.

64442232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932 (or 1925 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 64442232 is about 8027.5919178792. The cubic root of 64442232 is about 400.9192027145.

Adding to 64442232 its reverse (23224446), we get a palindrome (87666678).

The spelling of 64442232 in words is "sixty-four million, four hundred forty-two thousand, two hundred thirty-two".