28259084729456 has 20 divisors (see below), whose sum is σ = 62573687615472. Its totient is φ = 12111036312576.

The previous prime is 28259084729363. The next prime is 28259084729459. The reversal of 28259084729456 is 65492748095282.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28259084729456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28259084729459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126156628145 + ... + 126156628368.

Almost surely, 2^{28259084729456} is an apocalyptic number.

It is an amenable number.

28259084729456 is an abundant number, since it is smaller than the sum of its proper divisors (34314602886016).

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

28259084729456 is a wasteful number, since it uses less digits than its factorization.

28259084729456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252313256528 (or 252313256522 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 71.

The spelling of 28259084729456 in words is "twenty-eight trillion, two hundred fifty-nine billion, eighty-four million, seven hundred twenty-nine thousand, four hundred fifty-six".