30456305240 has 64 divisors (see below), whose sum is σ = 69900192000. Its totient is φ = 11940179328.

The previous prime is 30456305221. The next prime is 30456305249. The reversal of 30456305240 is 4250365403.

It is a junction number, because it is equal to n+sod(n) for n = 30456305197 and 30456305206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30456305249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504767 + ... + 561873.

It is an arithmetic number, because the mean of its divisors is an integer number (1092190500).

Almost surely, 2^30456305240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30456305240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34950096000).

30456305240 is an abundant number, since it is smaller than the sum of its proper divisors (39443886760).

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

30456305240 is a wasteful number, since it uses less digits than its factorization.

30456305240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57384 (or 57380 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The spelling of 30456305240 in words is "thirty billion, four hundred fifty-six million, three hundred five thousand, two hundred forty".