30197836 has 6 divisors (see below), whose sum is σ = 52846220. Its totient is φ = 15098916.

The previous prime is 30197833. The next prime is 30197857. The reversal of 30197836 is 63879103.

It is a junction number, because it is equal to n+sod(n) for n = 30197795 and 30197804.

It is not an unprimeable number, because it can be changed into a prime (30197833) 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 as a sum of consecutive naturals, namely, 3774726 + ... + 3774733.

Almost surely, 2^30197836 is an apocalyptic number.

It is an amenable number.

30197836 is a deficient number, since it is larger than the sum of its proper divisors (22648384).

30197836 is a wasteful number, since it uses less digits than its factorization.

30197836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7549463 (or 7549461 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 30197836 is about 5495.2557720274. The cubic root of 30197836 is about 311.4047796062.

The spelling of 30197836 in words is "thirty million, one hundred ninety-seven thousand, eight hundred thirty-six".