30051212240 has 40 divisors (see below), whose sum is σ = 79850365440. Its totient is φ = 10303272576.

The previous prime is 30051212237. The next prime is 30051212251. The reversal of 30051212240 is 4221215003.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 26830880 + ... + 26831999.

It is an arithmetic number, because the mean of its divisors is an integer number (1996259136).

Almost surely, 2^30051212240 is an apocalyptic number.

It is an amenable number.

30051212240 is an abundant number, since it is smaller than the sum of its proper divisors (49799153200).

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

30051212240 is a wasteful number, since it uses less digits than its factorization.

30051212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53662899 (or 53662893 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 30051212240 its reverse (4221215003), we get a palindrome (34272427243).

The spelling of 30051212240 in words is "thirty billion, fifty-one million, two hundred twelve thousand, two hundred forty".