28003194 has 12 divisors (see below), whose sum is σ = 60673626. Its totient is φ = 9334392.

The previous prime is 28003193. The next prime is 28003231. The reversal of 28003194 is 49130082.

It can be written as a sum of positive squares in only one way, i.e., 25130169 + 2873025 = 5013^2 + 1695^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28003193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777849 + ... + 777884.

Almost surely, 2^28003194 is an apocalyptic number.

28003194 is an abundant number, since it is smaller than the sum of its proper divisors (32670432).

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

28003194 is a wasteful number, since it uses less digits than its factorization.

28003194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555741 (or 1555738 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28003194 is about 5291.8044181545. The cubic root of 28003194 is about 303.6704430166.

The spelling of 28003194 in words is "twenty-eight million, three thousand, one hundred ninety-four".