8100728 has 8 divisors (see below), whose sum is σ = 15188880. Its totient is φ = 4050360.

The previous prime is 8100713. The next prime is 8100731. The reversal of 8100728 is 8270018.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 8100697 and 8100706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506288 + ... + 506303.

It is an arithmetic number, because the mean of its divisors is an integer number (1898610).

Almost surely, 2^8100728 is an apocalyptic number.

It is an amenable number.

8100728 is a deficient number, since it is larger than the sum of its proper divisors (7088152).

8100728 is a wasteful number, since it uses less digits than its factorization.

8100728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012597 (or 1012593 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 8100728 is about 2846.1777878411. The cubic root of 8100728 is about 200.8359014764.

The spelling of 8100728 in words is "eight million, one hundred thousand, seven hundred twenty-eight".