8521416 has 32 divisors (see below), whose sum is σ = 23671200. Its totient is φ = 2840400.

The previous prime is 8521411. The next prime is 8521417. The reversal of 8521416 is 6141258.

It is a super-2 number, since 2×8521416² = 145229061290112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8521416.

It is not an unprimeable number, because it can be changed into a prime (8521411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19510 + ... + 19941.

It is an arithmetic number, because the mean of its divisors is an integer number (739725).

Almost surely, 2^8521416 is an apocalyptic number.

It is an amenable number.

8521416 is an abundant number, since it is smaller than the sum of its proper divisors (15149784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8521416 is a wasteful number, since it uses less digits than its factorization.

8521416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39466 (or 39456 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 8521416 is about 2919.1464505913. The cubic root of 8521416 is about 204.2540088513.

The spelling of 8521416 in words is "eight million, five hundred twenty-one thousand, four hundred sixteen".