8364559428 has 72 divisors (see below), whose sum is σ = 21565835928. Its totient is φ = 2732640768.

The previous prime is 8364559409. The next prime is 8364559447. The reversal of 8364559428 is 8249554638.

8364559428 is a `hidden beast` number, since 8 + 3 + 6 + 45 + 594 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (8364559409) and next prime (8364559447).

It can be written as a sum of positive squares in 4 ways, for example, as 1927385604 + 6437173824 = 43902^2 + 80232^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2434800 + ... + 2438232.

It is an arithmetic number, because the mean of its divisors is an integer number (299525499).

Almost surely, 2^8364559428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8364559428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10782917964).

8364559428 is an abundant number, since it is smaller than the sum of its proper divisors (13201276500).

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

8364559428 is a wasteful number, since it uses less digits than its factorization.

8364559428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773 (or 4768 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The square root of 8364559428 is about 91457.9653611428. The cubic root of 8364559428 is about 2029.9298209943.

The spelling of 8364559428 in words is "eight billion, three hundred sixty-four million, five hundred fifty-nine thousand, four hundred twenty-eight".