30400404140 has 24 divisors (see below), whose sum is σ = 64197509040. Its totient is φ = 12092226368.

The previous prime is 30400404131. The next prime is 30400404157. The reversal of 30400404140 is 4140400403.

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

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, 4242287 + ... + 4249446.

It is an arithmetic number, because the mean of its divisors is an integer number (2674896210).

Almost surely, 2^30400404140 is an apocalyptic number.

It is an amenable number.

30400404140 is an abundant number, since it is smaller than the sum of its proper divisors (33797104900).

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

30400404140 is a wasteful number, since it uses less digits than its factorization.

30400404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491921 (or 8491919 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 30400404140 its reverse (4140400403), we get a palindrome (34540804543).

The spelling of 30400404140 in words is "thirty billion, four hundred million, four hundred four thousand, one hundred forty".