30385836 has 36 divisors (see below), whose sum is σ = 82718272. Its totient is φ = 9349344.

The previous prime is 30385819. The next prime is 30385841. The reversal of 30385836 is 63858303.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30385836.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31996 + ... + 32931.

Almost surely, 2^30385836 is an apocalyptic number.

30385836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30385836 is an abundant number, since it is smaller than the sum of its proper divisors (52332436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30385836 is a wasteful number, since it uses less digits than its factorization.

30385836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64950 (or 64945 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 30385836 is about 5512.3348954867. The cubic root of 30385836 is about 312.0496715789.

The spelling of 30385836 in words is "thirty million, three hundred eighty-five thousand, eight hundred thirty-six".