30432144 has 20 divisors (see below), whose sum is σ = 78616496. Its totient is φ = 10144032.

The previous prime is 30432133. The next prime is 30432161. The reversal of 30432144 is 44123403.

It is a super-2 number, since 2×30432144² = 1852230776873472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30432144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316954 + ... + 317049.

Almost surely, 2^30432144 is an apocalyptic number.

It is an amenable number.

30432144 is an abundant number, since it is smaller than the sum of its proper divisors (48184352).

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

30432144 is a wasteful number, since it uses less digits than its factorization.

30432144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634014 (or 634008 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30432144 is about 5516.5336942685. The cubic root of 30432144 is about 312.2081123032.

Adding to 30432144 its reverse (44123403), we get a palindrome (74555547).

The spelling of 30432144 in words is "thirty million, four hundred thirty-two thousand, one hundred forty-four".