8729472 has 64 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 2870784.

The previous prime is 8729467. The next prime is 8729491. The reversal of 8729472 is 2749278.

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8729472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48679 + ... + 48857.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

Almost surely, 2^8729472 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 8729472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11750400).

8729472 is an abundant number, since it is smaller than the sum of its proper divisors (14771328).

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

8729472 is a wasteful number, since it uses less digits than its factorization.

8729472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 311 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 8729472 is about 2954.5679887253. The cubic root of 8729472 is about 205.9029926263.

The spelling of 8729472 in words is "eight million, seven hundred twenty-nine thousand, four hundred seventy-two".