66030432 has 96 divisors (see below), whose sum is σ = 188409312. Its totient is φ = 20127744.

The previous prime is 66030427. The next prime is 66030439. The reversal of 66030432 is 23403066.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66030439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195768 + ... + 196104.

It is an arithmetic number, because the mean of its divisors is an integer number (1962597).

Almost surely, 2^66030432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66030432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94204656).

66030432 is an abundant number, since it is smaller than the sum of its proper divisors (122378880).

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

66030432 is a wasteful number, since it uses less digits than its factorization.

66030432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 66030432 is about 8125.9111489112. The cubic root of 66030432 is about 404.1861051526.

Adding to 66030432 its reverse (23403066), we get a palindrome (89433498).

The spelling of 66030432 in words is "sixty-six million, thirty thousand, four hundred thirty-two".