8521838 has 32 divisors (see below), whose sum is σ = 14488320. Its totient is φ = 3732480.

The previous prime is 8521831. The next prime is 8521841. The reversal of 8521838 is 8381258.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 8521798 and 8521807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78128 + ... + 78236.

It is an arithmetic number, because the mean of its divisors is an integer number (452760).

Almost surely, 2^8521838 is an apocalyptic number.

8521838 is a deficient number, since it is larger than the sum of its proper divisors (5966482).

8521838 is a wasteful number, since it uses less digits than its factorization.

8521838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 15360, while the sum is 35.

The square root of 8521838 is about 2919.2187310991. The cubic root of 8521838 is about 204.2573805041.

The spelling of 8521838 in words is "eight million, five hundred twenty-one thousand, eight hundred thirty-eight".