28874573 has 12 divisors (see below), whose sum is σ = 36173340. Its totient is φ = 22845312.

The previous prime is 28874567. The next prime is 28874597. The reversal of 28874573 is 37547882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10099684 + 18774889 = 3178^2 + 4333^2 .

It is not a de Polignac number, because 28874573 - 2⁸ = 28874317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28874273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22028 + ... + 23301.

It is an arithmetic number, because the mean of its divisors is an integer number (3014445).

Almost surely, 2^28874573 is an apocalyptic number.

It is an amenable number.

28874573 is a deficient number, since it is larger than the sum of its proper divisors (7298767).

28874573 is a wasteful number, since it uses less digits than its factorization.

28874573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45356 (or 45349 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The square root of 28874573 is about 5373.5065832285. The cubic root of 28874573 is about 306.7881097197.

The spelling of 28874573 in words is "twenty-eight million, eight hundred seventy-four thousand, five hundred seventy-three".