30120832 has 32 divisors (see below), whose sum is σ = 68580720. Its totient is φ = 12908544.

The previous prime is 30120829. The next prime is 30120847. The reversal of 30120832 is 23802103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15913 + ... + 17704.

Almost surely, 2^30120832 is an apocalyptic number.

30120832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30120832 is an abundant number, since it is smaller than the sum of its proper divisors (38459888).

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

30120832 is an equidigital number, since it uses as much as digits as its factorization.

30120832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638 (or 33626 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30120832 is about 5488.2448924952. The cubic root of 30120832 is about 311.1398618932.

Adding to 30120832 its reverse (23802103), we get a palindrome (53922935).

The spelling of 30120832 in words is "thirty million, one hundred twenty thousand, eight hundred thirty-two".