30872448 has 64 divisors (see below), whose sum is σ = 91126800. Its totient is φ = 10289664.

The previous prime is 30872441. The next prime is 30872449. The reversal of 30872448 is 84427803.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30872441) 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, 1011 + ... + 7922.

Almost surely, 2^30872448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30872448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45563400).

30872448 is an abundant number, since it is smaller than the sum of its proper divisors (60254352).

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

30872448 is an equidigital number, since it uses as much as digits as its factorization.

30872448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956 (or 8938 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 30872448 is about 5556.2980481612. The cubic root of 30872448 is about 313.7066241629.

The spelling of 30872448 in words is "thirty million, eight hundred seventy-two thousand, four hundred forty-eight".