28188147082 has 16 divisors (see below), whose sum is σ = 42472615680. Its totient is φ = 14030646448.

The previous prime is 28188147061. The next prime is 28188147101. The reversal of 28188147082 is 28074188182.

It is a happy number.

It is a super-2 number, since 2×28188147082² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1907988 + ... + 1922704.

It is an arithmetic number, because the mean of its divisors is an integer number (2654538480).

Almost surely, 2^28188147082 is an apocalyptic number.

28188147082 is a deficient number, since it is larger than the sum of its proper divisors (14284468598).

28188147082 is a wasteful number, since it uses less digits than its factorization.

28188147082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18965.

The product of its (nonzero) digits is 458752, while the sum is 49.

The spelling of 28188147082 in words is "twenty-eight billion, one hundred eighty-eight million, one hundred forty-seven thousand, eighty-two".