30123936 has 36 divisors (see below), whose sum is σ = 85665762. Its totient is φ = 10041216.

The previous prime is 30123931. The next prime is 30123991. The reversal of 30123936 is 63932103.

It can be written as a sum of positive squares in only one way, i.e., 27499536 + 2624400 = 5244^2 + 1620^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30123931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52011 + ... + 52586.

Almost surely, 2^30123936 is an apocalyptic number.

30123936 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30123936 is an abundant number, since it is smaller than the sum of its proper divisors (55541826).

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

30123936 is a wasteful number, since it uses less digits than its factorization.

30123936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104613 (or 104602 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 30123936 is about 5488.5276714252. The cubic root of 30123936 is about 311.1505493466.

The spelling of 30123936 in words is "thirty million, one hundred twenty-three thousand, nine hundred thirty-six".