28000478404248 has 64 divisors (see below), whose sum is σ = 80793459659520. Its totient is φ = 7920927408000.

The previous prime is 28000478404231. The next prime is 28000478404253. The reversal of 28000478404248 is 84240487400082.

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 28000478404248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825079638 + ... + 825113573.

It is an arithmetic number, because the mean of its divisors is an integer number (1262397807180).

Almost surely, 2^{28000478404248} is an apocalyptic number.

28000478404248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28000478404248 is an abundant number, since it is smaller than the sum of its proper divisors (52792981255272).

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

28000478404248 is a wasteful number, since it uses less digits than its factorization.

28000478404248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650193328 (or 1650193324 counting only the distinct ones).

The product of its (nonzero) digits is 3670016, while the sum is 51.

The spelling of 28000478404248 in words is "twenty-eight trillion, four hundred seventy-eight million, four hundred four thousand, two hundred forty-eight".