30885281280 has 480 divisors, whose sum is σ = 128691763200. Its totient is φ = 6687277056.

The previous prime is 30885281269. The next prime is 30885281293. The reversal of 30885281280 is 8218258803.

30885281280 is a `hidden beast` number, since 30 + 8 + 8 + 528 + 12 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3059281 + ... + 3069359.

It is an arithmetic number, because the mean of its divisors is an integer number (268107840).

Almost surely, 2^30885281280 is an apocalyptic number.

30885281280 is a gapful number since it is divisible by the number (30) 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 30885281280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64345881600).

30885281280 is an abundant number, since it is smaller than the sum of its proper divisors (97806481920).

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

30885281280 is a wasteful number, since it uses less digits than its factorization.

30885281280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134 (or 10115 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 30885281280 in words is "thirty billion, eight hundred eighty-five million, two hundred eighty-one thousand, two hundred eighty".