30878112 has 24 divisors (see below), whose sum is σ = 81055296. Its totient is φ = 10292672.

The previous prime is 30878101. The next prime is 30878117. The reversal of 30878112 is 21187803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30878112.

It is not an unprimeable number, because it can be changed into a prime (30878117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160728 + ... + 160919.

It is an arithmetic number, because the mean of its divisors is an integer number (3377304).

Almost surely, 2^30878112 is an apocalyptic number.

30878112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30878112 is an abundant number, since it is smaller than the sum of its proper divisors (50177184).

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

30878112 is a wasteful number, since it uses less digits than its factorization.

30878112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321660 (or 321652 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 30878112 is about 5556.8077166661. The cubic root of 30878112 is about 313.7258076721.

The spelling of 30878112 in words is "thirty million, eight hundred seventy-eight thousand, one hundred twelve".