30780808 has 32 divisors (see below), whose sum is σ = 60730560. Its totient is φ = 14597440.

The previous prime is 30780793. The next prime is 30780809. The reversal of 30780808 is 80808703.

It is a super-2 number, since 2×30780808² = 1894916282265728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30780809) 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 in 7 ways as a sum of consecutive naturals, for example, 23466 + ... + 24742.

It is an arithmetic number, because the mean of its divisors is an integer number (1897830).

Almost surely, 2^30780808 is an apocalyptic number.

It is an amenable number.

30780808 is a deficient number, since it is larger than the sum of its proper divisors (29949752).

30780808 is a wasteful number, since it uses less digits than its factorization.

30780808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 30780808 is about 5548.0454215877. The cubic root of 30780808 is about 313.3959202979.

The spelling of 30780808 in words is "thirty million, seven hundred eighty thousand, eight hundred eight".