30775776 has 48 divisors (see below), whose sum is σ = 81530064. Its totient is φ = 10164224.

The previous prime is 30775753. The next prime is 30775879. The reversal of 30775776 is 67757703.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9430 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (1698543).

Almost surely, 2^30775776 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 30775776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40765032).

30775776 is an abundant number, since it is smaller than the sum of its proper divisors (50754288).

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

30775776 is a wasteful number, since it uses less digits than its factorization.

30775776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2955 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 42.

The square root of 30775776 is about 5547.5919100092. The cubic root of 30775776 is about 313.3788415366.

The spelling of 30775776 in words is "thirty million, seven hundred seventy-five thousand, seven hundred seventy-six".