8261728 has 24 divisors (see below), whose sum is σ = 17223192. Its totient is φ = 3887616.

The previous prime is 8261689. The next prime is 8261749. The reversal of 8261728 is 8271628.

It is a super-2 number, since 2×8261728² = 136512299091968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 8261693 and 8261702.

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, 7050 + ... + 8137.

It is an arithmetic number, because the mean of its divisors is an integer number (717633).

Almost surely, 2^8261728 is an apocalyptic number.

It is an amenable number.

8261728 is an abundant number, since it is smaller than the sum of its proper divisors (8961464).

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

8261728 is a wasteful number, since it uses less digits than its factorization.

8261728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214 (or 15206 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 8261728 is about 2874.3221809672. The cubic root of 8261728 is about 202.1577045096.

The spelling of 8261728 in words is "eight million, two hundred sixty-one thousand, seven hundred twenty-eight".