30778116 has 12 divisors (see below), whose sum is σ = 71815632. Its totient is φ = 10259368.

The previous prime is 30778103. The next prime is 30778127. The reversal of 30778116 is 61187703.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1282410 + ... + 1282433.

It is an arithmetic number, because the mean of its divisors is an integer number (5984636).

Almost surely, 2^30778116 is an apocalyptic number.

It is an amenable number.

30778116 is an abundant number, since it is smaller than the sum of its proper divisors (41037516).

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

30778116 is a wasteful number, since it uses less digits than its factorization.

30778116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564850 (or 2564848 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 30778116 is about 5547.8028083197. The cubic root of 30778116 is about 313.3867837994.

The spelling of 30778116 in words is "thirty million, seven hundred seventy-eight thousand, one hundred sixteen".