30770805 has 16 divisors (see below), whose sum is σ = 53020800. Its totient is φ = 15148608.

The previous prime is 30770797. The next prime is 30770807. The reversal of 30770805 is 50807703.

It is not a de Polignac number, because 30770805 - 2³ = 30770797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30770807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78705 + ... + 79094.

It is an arithmetic number, because the mean of its divisors is an integer number (3313800).

Almost surely, 2^30770805 is an apocalyptic number.

It is an amenable number.

30770805 is a deficient number, since it is larger than the sum of its proper divisors (22249995).

30770805 is a wasteful number, since it uses less digits than its factorization.

30770805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157820.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 30770805 is about 5547.1438596813. The cubic root of 30770805 is about 313.3619679832.

The spelling of 30770805 in words is "thirty million, seven hundred seventy thousand, eight hundred five".