28287478282 has 16 divisors (see below), whose sum is σ = 48841692480. Its totient is φ = 12035986848.

The previous prime is 28287478273. The next prime is 28287478291.

It is a happy number.

28287478282 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (28287478273) and next prime (28287478291).

It is a super-3 number, since 3×28287478282³ (a number of 32 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 7266163 + ... + 7270054.

It is an arithmetic number, because the mean of its divisors is an integer number (3052605780).

Almost surely, 2^28287478282 is an apocalyptic number.

28287478282 is a deficient number, since it is larger than the sum of its proper divisors (20554214198).

28287478282 is a wasteful number, since it uses less digits than its factorization.

28287478282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14536365.

The product of its digits is 12845056, while the sum is 58.

The spelling of 28287478282 in words is "twenty-eight billion, two hundred eighty-seven million, four hundred seventy-eight thousand, two hundred eighty-two".