28078497484800 has 2496 divisors, whose sum is σ = 115750923847680. Its totient is φ = 5868135383040.

The previous prime is 28078497484759. The next prime is 28078497484847. The reversal of 28078497484800 is 848479487082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 99217305459 + ... + 99217305741.

Almost surely, 2^{28078497484800} is an apocalyptic number.

28078497484800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28078497484800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57875461923840).

28078497484800 is an abundant number, since it is smaller than the sum of its proper divisors (87672426362880).

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

28078497484800 is a wasteful number, since it uses less digits than its factorization.

28078497484800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 231211008, while the sum is 69.

The spelling of 28078497484800 in words is "twenty-eight trillion, seventy-eight billion, four hundred ninety-seven million, four hundred eighty-four thousand, eight hundred".