30530140 has 24 divisors (see below), whose sum is σ = 65202480. Its totient is φ = 12004608.

The previous prime is 30530111. The next prime is 30530153. The reversal of 30530140 is 4103503.

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, 11757 + ... + 14116.

It is an arithmetic number, because the mean of its divisors is an integer number (2716770).

Almost surely, 2^30530140 is an apocalyptic number.

It is an amenable number.

30530140 is an abundant number, since it is smaller than the sum of its proper divisors (34672340).

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

30530140 is a wasteful number, since it uses less digits than its factorization.

30530140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25941 (or 25939 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30530140 is about 5525.4085821774. The cubic root of 30530140 is about 312.5428719848.

Adding to 30530140 its reverse (4103503), we get a palindrome (34633643).

The spelling of 30530140 in words is "thirty million, five hundred thirty thousand, one hundred forty".