28918473826 has 16 divisors (see below), whose sum is σ = 47365777728. Its totient is φ = 13132361200.

The previous prime is 28918473769. The next prime is 28918473839. The reversal of 28918473826 is 62837481982.

It is a happy number.

It is a super-4 number, since 4×28918473826⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596110 + ... + 642793.

It is an arithmetic number, because the mean of its divisors is an integer number (2960361108).

Almost surely, 2^28918473826 is an apocalyptic number.

28918473826 is a deficient number, since it is larger than the sum of its proper divisors (18447303902).

28918473826 is a wasteful number, since it uses less digits than its factorization.

28918473826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239977.

The product of its digits is 9289728, while the sum is 58.

The spelling of 28918473826 in words is "twenty-eight billion, nine hundred eighteen million, four hundred seventy-three thousand, eight hundred twenty-six".