30780692 has 6 divisors (see below), whose sum is σ = 53866218. Its totient is φ = 15390344.

The previous prime is 30780667. The next prime is 30780697. The reversal of 30780692 is 29608703.

It can be written as a sum of positive squares in only one way, i.e., 20757136 + 10023556 = 4556^2 + 3166^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30780697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3847583 + ... + 3847590.

It is an arithmetic number, because the mean of its divisors is an integer number (8977703).

Almost surely, 2^30780692 is an apocalyptic number.

It is an amenable number.

30780692 is a deficient number, since it is larger than the sum of its proper divisors (23085526).

30780692 is a wasteful number, since it uses less digits than its factorization.

30780692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695177 (or 7695175 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30780692 is about 5548.0349674457. The cubic root of 30780692 is about 313.3955266113.

The spelling of 30780692 in words is "thirty million, seven hundred eighty thousand, six hundred ninety-two".