28078299754 has 8 divisors (see below), whose sum is σ = 42188475780. Its totient is φ = 14015474496.

The previous prime is 28078299749. The next prime is 28078299791. The reversal of 28078299754 is 45799287082.

It can be written as a sum of positive squares in 2 ways, for example, as 27881318529 + 196981225 = 166977^2 + 14035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28078299692 and 28078299701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11836209 + ... + 11838580.

Almost surely, 2^28078299754 is an apocalyptic number.

28078299754 is a deficient number, since it is larger than the sum of its proper divisors (14110176026).

28078299754 is a wasteful number, since it uses less digits than its factorization.

28078299754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23675384.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 28078299754 in words is "twenty-eight billion, seventy-eight million, two hundred ninety-nine thousand, seven hundred fifty-four".