8729072 has 20 divisors (see below), whose sum is σ = 18450456. Its totient is φ = 3967680.

The previous prime is 8729059. The next prime is 8729081. The reversal of 8729072 is 2709278.

It is an Ulam number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24623 + ... + 24974.

Almost surely, 2^8729072 is an apocalyptic number.

It is an amenable number.

8729072 is an abundant number, since it is smaller than the sum of its proper divisors (9721384).

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

8729072 is a wasteful number, since it uses less digits than its factorization.

8729072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49616 (or 49610 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 8729072 is about 2954.5002961584. The cubic root of 8729072 is about 205.8998476306.

The spelling of 8729072 in words is "eight million, seven hundred twenty-nine thousand, seventy-two".