8520388 has 12 divisors (see below), whose sum is σ = 14934780. Its totient is φ = 4253312.

The previous prime is 8520359. The next prime is 8520389. The reversal of 8520388 is 8830258.

It is a happy number.

8520388 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4528384 + 3992004 = 2128^2 + 1998^2 .

It is not an unprimeable number, because it can be changed into a prime (8520389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920 + ... + 4552.

It is an arithmetic number, because the mean of its divisors is an integer number (1244565).

Almost surely, 2^8520388 is an apocalyptic number.

It is an amenable number.

8520388 is a deficient number, since it is larger than the sum of its proper divisors (6414392).

8520388 is a wasteful number, since it uses less digits than its factorization.

8520388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446 (or 3444 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 8520388 is about 2918.9703664135. The cubic root of 8520388 is about 204.2457949752.

The spelling of 8520388 in words is "eight million, five hundred twenty thousand, three hundred eighty-eight".