30393836 has 24 divisors (see below), whose sum is σ = 58547664. Its totient is φ = 13690880.

The previous prime is 30393821. The next prime is 30393871. The reversal of 30393836 is 63839303.

It is a junction number, because it is equal to n+sod(n) for n = 30393796 and 30393805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (2439486).

Almost surely, 2^30393836 is an apocalyptic number.

It is an amenable number.

30393836 is a deficient number, since it is larger than the sum of its proper divisors (28153828).

30393836 is a wasteful number, since it uses less digits than its factorization.

30393836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6241 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 30393836 is about 5513.0604930474. The cubic root of 30393836 is about 312.0770547136.

The spelling of 30393836 in words is "thirty million, three hundred ninety-three thousand, eight hundred thirty-six".