30886656 has 72 divisors (see below), whose sum is σ = 83100864. Its totient is φ = 10183680.

The previous prime is 30886613. The next prime is 30886663. The reversal of 30886656 is 65668803.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 100455 + ... + 100761.

Almost surely, 2^30886656 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 30886656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41550432).

30886656 is an abundant number, since it is smaller than the sum of its proper divisors (52214208).

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

30886656 is a wasteful number, since it uses less digits than its factorization.

30886656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 30886656 is about 5557.5764502164. The cubic root of 30886656 is about 313.7547410700.

The spelling of 30886656 in words is "thirty million, eight hundred eighty-six thousand, six hundred fifty-six".