8743728 has 80 divisors (see below), whose sum is σ = 26355456. Its totient is φ = 2446080.

The previous prime is 8743717. The next prime is 8743733. The reversal of 8743728 is 8273478.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17563 + ... + 18053.

Almost surely, 2^8743728 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 8743728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13177728).

8743728 is an abundant number, since it is smaller than the sum of its proper divisors (17611728).

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

8743728 is a wasteful number, since it uses less digits than its factorization.

8743728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 556 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 8743728 is about 2956.9795400036. The cubic root of 8743728 is about 206.0150176000.

The spelling of 8743728 in words is "eight million, seven hundred forty-three thousand, seven hundred twenty-eight".