28033280278 has 4 divisors (see below), whose sum is σ = 42049920420. Its totient is φ = 14016640138.

The previous prime is 28033280267. The next prime is 28033280281. The reversal of 28033280278 is 87208233082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87208233082 = 2 ⋅43604116541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7008320068 + ... + 7008320071.

It is an arithmetic number, because the mean of its divisors is an integer number (10512480105).

Almost surely, 2^28033280278 is an apocalyptic number.

28033280278 is a deficient number, since it is larger than the sum of its proper divisors (14016640142).

28033280278 is a wasteful number, since it uses less digits than its factorization.

28033280278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14016640141.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 28033280278 in words is "twenty-eight billion, thirty-three million, two hundred eighty thousand, two hundred seventy-eight".