30045140 has 24 divisors (see below), whose sum is σ = 63266280. Its totient is φ = 11985408.

The previous prime is 30045133. The next prime is 30045151. The reversal of 30045140 is 4154003.

It can be written as a sum of positive squares in 4 ways, for example, as 2650384 + 27394756 = 1628^2 + 5234^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6344 + ... + 10016.

It is an arithmetic number, because the mean of its divisors is an integer number (2636095).

Almost surely, 2^30045140 is an apocalyptic number.

It is an amenable number.

30045140 is an abundant number, since it is smaller than the sum of its proper divisors (33221140).

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

30045140 is a wasteful number, since it uses less digits than its factorization.

30045140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4089 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30045140 is about 5481.3447255213. The cubic root of 30045140 is about 310.8790174683.

Adding to 30045140 its reverse (4154003), we get a palindrome (34199143).

The spelling of 30045140 in words is "thirty million, forty-five thousand, one hundred forty".