30305916 has 36 divisors (see below), whose sum is σ = 77046424. Its totient is φ = 10044000.

The previous prime is 30305903. The next prime is 30305963. The reversal of 30305916 is 61950303.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30305916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4191 + ... + 8841.

Almost surely, 2^30305916 is an apocalyptic number.

30305916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30305916 is an abundant number, since it is smaller than the sum of its proper divisors (46740508).

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

30305916 is a wasteful number, since it uses less digits than its factorization.

30305916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 30305916 is about 5505.0809258357. The cubic root of 30305916 is about 311.7758498505.

The spelling of 30305916 in words is "thirty million, three hundred five thousand, nine hundred sixteen".