8258728 has 8 divisors (see below), whose sum is σ = 15485130. Its totient is φ = 4129360.

The previous prime is 8258717. The next prime is 8258737. The reversal of 8258728 is 8278528.

It can be written as a sum of positive squares in only one way, i.e., 4502884 + 3755844 = 2122^2 + 1938^2 .

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

It is a super-3 number, since 3×8258728³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516163 + ... + 516178.

Almost surely, 2^8258728 is an apocalyptic number.

It is an amenable number.

8258728 is a deficient number, since it is larger than the sum of its proper divisors (7226402).

8258728 is a wasteful number, since it uses less digits than its factorization.

8258728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032347 (or 1032343 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 8258728 is about 2873.8002714176. The cubic root of 8258728 is about 202.1332323678.

The spelling of 8258728 in words is "eight million, two hundred fifty-eight thousand, seven hundred twenty-eight".