30872112 has 40 divisors (see below), whose sum is σ = 83952960. Its totient is φ = 9748800.

The previous prime is 30872111. The next prime is 30872113. The reversal of 30872112 is 21127803.

It is an interprime number because it is at equal distance from previous prime (30872111) and next prime (30872113).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (30872111) 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, 16014 + ... + 17837.

It is an arithmetic number, because the mean of its divisors is an integer number (2098824).

Almost surely, 2^30872112 is an apocalyptic number.

It is an amenable number.

30872112 is an abundant number, since it is smaller than the sum of its proper divisors (53080848).

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

30872112 is a wasteful number, since it uses less digits than its factorization.

30872112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33881 (or 33875 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 30872112 is about 5556.2678121199. The cubic root of 30872112 is about 313.7054860844.

Adding to 30872112 its reverse (21127803), we get a palindrome (51999915).

The spelling of 30872112 in words is "thirty million, eight hundred seventy-two thousand, one hundred twelve".