8520872 has 8 divisors (see below), whose sum is σ = 15976650. Its totient is φ = 4260432.

The previous prime is 8520851. The next prime is 8520887. The reversal of 8520872 is 2780258.

It can be written as a sum of positive squares in only one way, i.e., 8213956 + 306916 = 2866^2 + 554^2 .

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, 532547 + ... + 532562.

Almost surely, 2^8520872 is an apocalyptic number.

It is an amenable number.

8520872 is a deficient number, since it is larger than the sum of its proper divisors (7455778).

8520872 is a wasteful number, since it uses less digits than its factorization.

8520872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065115 (or 1065111 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 8520872 is about 2919.0532711823. The cubic root of 8520872 is about 204.2496622910.

The spelling of 8520872 in words is "eight million, five hundred twenty thousand, eight hundred seventy-two".