28005433454012 has 24 divisors (see below), whose sum is σ = 56012479242720. Its totient is φ = 12001983122880.

The previous prime is 28005433453967. The next prime is 28005433454057. The reversal of 28005433454012 is 21045433450082.

It is an interprime number because it is at equal distance from previous prime (28005433453967) and next prime (28005433454057).

It is a super-2 number, since 2×28005433454012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 13404587 + ... + 15352322.

It is an arithmetic number, because the mean of its divisors is an integer number (2333853301780).

Almost surely, 2^{28005433454012} is an apocalyptic number.

It is an amenable number.

28005433454012 is an abundant number, since it is smaller than the sum of its proper divisors (28007045788708).

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

28005433454012 is a wasteful number, since it uses less digits than its factorization.

28005433454012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28791701 (or 28791699 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 28005433454012 in words is "twenty-eight trillion, five billion, four hundred thirty-three million, four hundred fifty-four thousand, twelve".