30873732 has 12 divisors (see below), whose sum is σ = 72038736. Its totient is φ = 10291240.

The previous prime is 30873721. The next prime is 30873749. The reversal of 30873732 is 23737803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30873693 and 30873702.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1286394 + ... + 1286417.

It is an arithmetic number, because the mean of its divisors is an integer number (6003228).

Almost surely, 2^30873732 is an apocalyptic number.

It is an amenable number.

30873732 is an abundant number, since it is smaller than the sum of its proper divisors (41165004).

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

30873732 is a wasteful number, since it uses less digits than its factorization.

30873732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572818 (or 2572816 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 30873732 is about 5556.4135915175. The cubic root of 30873732 is about 313.7109731725.

The spelling of 30873732 in words is "thirty million, eight hundred seventy-three thousand, seven hundred thirty-two".