30380518840 has 32 divisors (see below), whose sum is σ = 78121334880. Its totient is φ = 10416177792.

The previous prime is 30380518823. The next prime is 30380518841. The reversal of 30380518840 is 4881508303.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 30380518793 and 30380518802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30380518841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54250647 + ... + 54251206.

It is an arithmetic number, because the mean of its divisors is an integer number (2441291715).

Almost surely, 2^30380518840 is an apocalyptic number.

It is an amenable number.

30380518840 is an abundant number, since it is smaller than the sum of its proper divisors (47740816040).

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

30380518840 is a wasteful number, since it uses less digits than its factorization.

30380518840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108501871 (or 108501867 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 30380518840 in words is "thirty billion, three hundred eighty million, five hundred eighteen thousand, eight hundred forty".