30115960 has 64 divisors (see below), whose sum is σ = 78796800. Its totient is φ = 10144896.

The previous prime is 30115919. The next prime is 30115961. The reversal of 30115960 is 6951103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30115961) 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, 15609 + ... + 17431.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^30115960 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 30115960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39398400).

30115960 is an abundant number, since it is smaller than the sum of its proper divisors (48680840).

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

30115960 is a wasteful number, since it uses less digits than its factorization.

30115960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 30115960 is about 5487.8010168008. The cubic root of 30115960 is about 311.1230855179.

It can be divided in two parts, 301 and 15960, that added together give a palindrome (16261).

The spelling of 30115960 in words is "thirty million, one hundred fifteen thousand, nine hundred sixty".