8428712 has 8 divisors (see below), whose sum is σ = 15803850. Its totient is φ = 4214352.

The previous prime is 8428709. The next prime is 8428729. The reversal of 8428712 is 2178248.

It can be written as a sum of positive squares in only one way, i.e., 5692996 + 2735716 = 2386^2 + 1654^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526787 + ... + 526802.

Almost surely, 2^8428712 is an apocalyptic number.

It is an amenable number.

8428712 is a deficient number, since it is larger than the sum of its proper divisors (7375138).

8428712 is a wasteful number, since it uses less digits than its factorization.

8428712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053595 (or 1053591 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 8428712 is about 2903.2244143366. The cubic root of 8428712 is about 203.5106172785.

The spelling of 8428712 in words is "eight million, four hundred twenty-eight thousand, seven hundred twelve".