30767868 has 36 divisors (see below), whose sum is σ = 79879800. Its totient is φ = 9978336.

The previous prime is 30767861. The next prime is 30767881. The reversal of 30767868 is 86876703.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30767861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10218 + ... + 12881.

Almost surely, 2^30767868 is an apocalyptic number.

It is an amenable number.

30767868 is an abundant number, since it is smaller than the sum of its proper divisors (49111932).

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

30767868 is a wasteful number, since it uses less digits than its factorization.

30767868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23146 (or 23141 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 30767868 is about 5546.8791225337. The cubic root of 30767868 is about 313.3519977816.

The spelling of 30767868 in words is "thirty million, seven hundred sixty-seven thousand, eight hundred sixty-eight".