28044278 has 4 divisors (see below), whose sum is σ = 42066420. Its totient is φ = 14022138.

The previous prime is 28044277. The next prime is 28044301. The reversal of 28044278 is 87244082.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7011068 + ... + 7011071.

It is an arithmetic number, because the mean of its divisors is an integer number (10516605).

Almost surely, 2^28044278 is an apocalyptic number.

28044278 is a deficient number, since it is larger than the sum of its proper divisors (14022142).

28044278 is a wasteful number, since it uses less digits than its factorization.

28044278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14022141.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 28044278 is about 5295.6848471185. The cubic root of 28044278 is about 303.8188772773.

The spelling of 28044278 in words is "twenty-eight million, forty-four thousand, two hundred seventy-eight".