30320140 has 12 divisors (see below), whose sum is σ = 63672336. Its totient is φ = 12128048.

The previous prime is 30320137. The next prime is 30320161. The reversal of 30320140 is 4102303.

It is a self number, because there is not a number n which added to its sum of digits gives 30320140.

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, 757984 + ... + 758023.

It is an arithmetic number, because the mean of its divisors is an integer number (5306028).

Almost surely, 2^30320140 is an apocalyptic number.

It is an amenable number.

30320140 is an abundant number, since it is smaller than the sum of its proper divisors (33352196).

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

30320140 is a wasteful number, since it uses less digits than its factorization.

30320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516016 (or 1516014 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30320140 is about 5506.3726717323. The cubic root of 30320140 is about 311.8246192730.

Adding to 30320140 its reverse (4102303), we get a palindrome (34422443).

The spelling of 30320140 in words is "thirty million, three hundred twenty thousand, one hundred forty".