28754289149800 has 24 divisors (see below), whose sum is σ = 66853722273750. Its totient is φ = 11501715659840.

The previous prime is 28754289149771. The next prime is 28754289149821. The reversal of 28754289149800 is 894198245782.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 25761451429476 + 2992837720324 = 5075574^2 + 1729982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71885722675 + ... + 71885723074.

Almost surely, 2^{28754289149800} is an apocalyptic number.

28754289149800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28754289149800 is an abundant number, since it is smaller than the sum of its proper divisors (38099433123950).

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

28754289149800 is a wasteful number, since it uses less digits than its factorization.

28754289149800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143771445765 (or 143771445756 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 67.

The spelling of 28754289149800 in words is "twenty-eight trillion, seven hundred fifty-four billion, two hundred eighty-nine million, one hundred forty-nine thousand, eight hundred".