30528209280 has 128 divisors (see below), whose sum is σ = 97476397920. Its totient is φ = 8126824448.

The previous prime is 30528209219. The next prime is 30528209293. The reversal of 30528209280 is 8290282503.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125154 + ... + 1151966.

Almost surely, 2^30528209280 is an apocalyptic number.

30528209280 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 30528209280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48738198960).

30528209280 is an abundant number, since it is smaller than the sum of its proper divisors (66948188640).

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

30528209280 is a wasteful number, since it uses less digits than its factorization.

30528209280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27428 (or 27416 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 30528209280 in words is "thirty billion, five hundred twenty-eight million, two hundred nine thousand, two hundred eighty".