30936649 has 8 divisors (see below), whose sum is σ = 32065920. Its totient is φ = 29811600.

The previous prime is 30936643. The next prime is 30936671. The reversal of 30936649 is 94663903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30936649 - 2³ = 30936641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30936641) 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 in 7 ways as a sum of consecutive naturals, for example, 25834 + ... + 27004.

It is an arithmetic number, because the mean of its divisors is an integer number (4008240).

Almost surely, 2^30936649 is an apocalyptic number.

It is an amenable number.

30936649 is a deficient number, since it is larger than the sum of its proper divisors (1129271).

30936649 is a wasteful number, since it uses less digits than its factorization.

30936649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 30936649 is about 5562.0723655846. The cubic root of 30936649 is about 313.9239304823.

The spelling of 30936649 in words is "thirty million, nine hundred thirty-six thousand, six hundred forty-nine".