30698880 has 128 divisors (see below), whose sum is σ = 99878400. Its totient is φ = 8017920.

The previous prime is 30698879. The next prime is 30698887. The reversal of 30698880 is 8889603.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30698887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113145 + ... + 113415.

It is an arithmetic number, because the mean of its divisors is an integer number (780300).

Almost surely, 2^30698880 is an apocalyptic number.

30698880 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 30698880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49939200).

30698880 is an abundant number, since it is smaller than the sum of its proper divisors (69179520).

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

30698880 is a wasteful number, since it uses less digits than its factorization.

30698880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 30698880 is about 5540.6570007536. The cubic root of 30698880 is about 313.1176222659.

The spelling of 30698880 in words is "thirty million, six hundred ninety-eight thousand, eight hundred eighty".