30778012 has 12 divisors (see below), whose sum is σ = 54062176. Its totient is φ = 15331680.

The previous prime is 30777941. The next prime is 30778021. The reversal of 30778012 is 21087703.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 13113 + ... + 15280.

Almost surely, 2^30778012 is an apocalyptic number.

It is an amenable number.

30778012 is a deficient number, since it is larger than the sum of its proper divisors (23284164).

30778012 is a wasteful number, since it uses less digits than its factorization.

30778012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28668 (or 28666 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 30778012 is about 5547.7934352317. The cubic root of 30778012 is about 313.3864308185.

The spelling of 30778012 in words is "thirty million, seven hundred seventy-eight thousand, twelve".