30879472 has 40 divisors (see below), whose sum is σ = 66523520. Its totient is φ = 13789440.

The previous prime is 30879449. The next prime is 30879473. The reversal of 30879472 is 27497803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30879473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054 + ... + 8842.

It is an arithmetic number, because the mean of its divisors is an integer number (1663088).

Almost surely, 2^30879472 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 30879472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33261760).

30879472 is an abundant number, since it is smaller than the sum of its proper divisors (35644048).

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

30879472 is a wasteful number, since it uses less digits than its factorization.

30879472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 30879472 is about 5556.9300877373. The cubic root of 30879472 is about 313.7304135326.

The spelling of 30879472 in words is "thirty million, eight hundred seventy-nine thousand, four hundred seventy-two".