30471264 has 72 divisors (see below), whose sum is σ = 89474112. Its totient is φ = 9826560.

The previous prime is 30471253. The next prime is 30471271. The reversal of 30471264 is 46217403.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7222 + ... + 10634.

It is an arithmetic number, because the mean of its divisors is an integer number (1242696).

Almost surely, 2^30471264 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 30471264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44737056).

30471264 is an abundant number, since it is smaller than the sum of its proper divisors (59002848).

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

30471264 is a wasteful number, since it uses less digits than its factorization.

30471264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460 (or 3449 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30471264 is about 5520.0782603148. The cubic root of 30471264 is about 312.3418344145.

Adding to 30471264 its reverse (46217403), we get a palindrome (76688667).

The spelling of 30471264 in words is "thirty million, four hundred seventy-one thousand, two hundred sixty-four".