30768079 has 4 divisors (see below), whose sum is σ = 32577984. Its totient is φ = 28958176.

The previous prime is 30768071. The next prime is 30768097. The reversal of 30768079 is 97086703.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30768079 - 2³ = 30768071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30768071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904927 + ... + 904960.

It is an arithmetic number, because the mean of its divisors is an integer number (8144496).

Almost surely, 2^30768079 is an apocalyptic number.

30768079 is a deficient number, since it is larger than the sum of its proper divisors (1809905).

30768079 is a wasteful number, since it uses less digits than its factorization.

30768079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809904.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 30768079 is about 5546.8981422052. The cubic root of 30768079 is about 313.3527140821.

It can be divided in two parts, 307 and 68079, that added together give a palindrome (68386).

The spelling of 30768079 in words is "thirty million, seven hundred sixty-eight thousand, seventy-nine".