30993236 has 24 divisors (see below), whose sum is σ = 57032640. Its totient is φ = 14708672.

The previous prime is 30993139. The next prime is 30993251. The reversal of 30993236 is 63239903.

It is a junction number, because it is equal to n+sod(n) for n = 30993196 and 30993205.

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, 11375 + ... + 13833.

It is an arithmetic number, because the mean of its divisors is an integer number (2376360).

Almost surely, 2^30993236 is an apocalyptic number.

It is an amenable number.

30993236 is a deficient number, since it is larger than the sum of its proper divisors (26039404).

30993236 is a wasteful number, since it uses less digits than its factorization.

30993236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 35.

The square root of 30993236 is about 5567.1569045609. The cubic root of 30993236 is about 314.1152159442.

The spelling of 30993236 in words is "thirty million, nine hundred ninety-three thousand, two hundred thirty-six".