30717798426 has 128 divisors (see below), whose sum is σ = 79475627520. Its totient is φ = 8612697600.

The previous prime is 30717798421. The next prime is 30717798437. The reversal of 30717798426 is 62489771703.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (30717798421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12011940 + ... + 12014496.

It is an arithmetic number, because the mean of its divisors is an integer number (620903340).

Almost surely, 2^30717798426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30717798426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39737813760).

30717798426 is an abundant number, since it is smaller than the sum of its proper divisors (48757829094).

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

30717798426 is a wasteful number, since it uses less digits than its factorization.

30717798426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3151 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 30717798426 in words is "thirty billion, seven hundred seventeen million, seven hundred ninety-eight thousand, four hundred twenty-six".