30805974444 has 216 divisors, whose sum is σ = 89437414080. Its totient is φ = 8205986880.

The previous prime is 30805974443. The next prime is 30805974481. The reversal of 30805974444 is 44447950803.

It is a super-2 number, since 2×30805974444² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30805974393 and 30805974402.

It is not an unprimeable number, because it can be changed into a prime (30805974443) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56317779 + ... + 56318325.

Almost surely, 2^30805974444 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 30805974444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44718707040).

30805974444 is an abundant number, since it is smaller than the sum of its proper divisors (58631439636).

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

30805974444 is a wasteful number, since it uses less digits than its factorization.

30805974444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 30805974444 in words is "thirty billion, eight hundred five million, nine hundred seventy-four thousand, four hundred forty-four".