30878160 has 40 divisors (see below), whose sum is σ = 95723040. Its totient is φ = 8234112.

The previous prime is 30878149. The next prime is 30878161. The reversal of 30878160 is 6187803.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30878161) 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 7 ways as a sum of consecutive naturals, for example, 64090 + ... + 64569.

It is an arithmetic number, because the mean of its divisors is an integer number (2393076).

Almost surely, 2^30878160 is an apocalyptic number.

30878160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30878160 is an abundant number, since it is smaller than the sum of its proper divisors (64844880).

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

30878160 is a wasteful number, since it uses less digits than its factorization.

30878160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128675 (or 128669 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 30878160 is about 5556.8120356910. The cubic root of 30878160 is about 313.7259702342.

The spelling of 30878160 in words is "thirty million, eight hundred seventy-eight thousand, one hundred sixty".