30773780 has 24 divisors (see below), whose sum is σ = 66202920. Its totient is φ = 12008960.

The previous prime is 30773779. The next prime is 30773789. The reversal of 30773780 is 8737703.

It can be written as a sum of positive squares in 4 ways, for example, as 2172676 + 28601104 = 1474^2 + 5348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30773780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30773789) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17945 + ... + 19584.

It is an arithmetic number, because the mean of its divisors is an integer number (2758455).

Almost surely, 2^30773780 is an apocalyptic number.

It is an amenable number.

30773780 is an abundant number, since it is smaller than the sum of its proper divisors (35429140).

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

30773780 is a wasteful number, since it uses less digits than its factorization.

30773780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37579 (or 37577 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 30773780 is about 5547.4120092165. The cubic root of 30773780 is about 313.3720665361.

The spelling of 30773780 in words is "thirty million, seven hundred seventy-three thousand, seven hundred eighty".