28773078 has 16 divisors (see below), whose sum is σ = 60931440. Its totient is φ = 9026816.

The previous prime is 28773067. The next prime is 28773079. The reversal of 28773078 is 87037782.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28773079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140943 + ... + 141146.

It is an arithmetic number, because the mean of its divisors is an integer number (3808215).

Almost surely, 2^28773078 is an apocalyptic number.

28773078 is an abundant number, since it is smaller than the sum of its proper divisors (32158362).

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

28773078 is a wasteful number, since it uses less digits than its factorization.

28773078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282111.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 28773078 is about 5364.0542502849. The cubic root of 28773078 is about 306.4282312245.

The spelling of 28773078 in words is "twenty-eight million, seven hundred seventy-three thousand, seventy-eight".