30438081792 has 108 divisors (see below), whose sum is σ = 87898050240. Its totient is φ = 10130125824.

The previous prime is 30438081761. The next prime is 30438081809. The reversal of 30438081792 is 29718083403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1508313 + ... + 1528359.

Almost surely, 2^30438081792 is an apocalyptic number.

30438081792 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30438081792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43949025120).

30438081792 is an abundant number, since it is smaller than the sum of its proper divisors (57459968448).

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

30438081792 is a wasteful number, since it uses less digits than its factorization.

30438081792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20728 (or 20711 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 30438081792 in words is "thirty billion, four hundred thirty-eight million, eighty-one thousand, seven hundred ninety-two".