30120432 has 40 divisors (see below), whose sum is σ = 81197184. Its totient is φ = 9603264.

The previous prime is 30120427. The next prime is 30120439. The reversal of 30120432 is 23402103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12538 + ... + 14745.

Almost surely, 2^30120432 is an apocalyptic number.

It is an amenable number.

30120432 is an abundant number, since it is smaller than the sum of its proper divisors (51076752).

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

30120432 is a wasteful number, since it uses less digits than its factorization.

30120432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27317 (or 27311 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30120432 is about 5488.2084508517. The cubic root of 30120432 is about 311.1384845907.

Adding to 30120432 its reverse (23402103), we get a palindrome (53522535).

The spelling of 30120432 in words is "thirty million, one hundred twenty thousand, four hundred thirty-two".