28903874 has 8 divisors (see below), whose sum is σ = 44066748. Its totient is φ = 14214960.

The previous prime is 28903871. The next prime is 28903909. The reversal of 28903874 is 47830982.

It can be written as a sum of positive squares in 2 ways, for example, as 25573249 + 3330625 = 5057^2 + 1825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28903871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118337 + ... + 118580.

Almost surely, 2^28903874 is an apocalyptic number.

28903874 is a deficient number, since it is larger than the sum of its proper divisors (15162874).

28903874 is a wasteful number, since it uses less digits than its factorization.

28903874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236980.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28903874 is about 5376.2323238491. The cubic root of 28903874 is about 306.8918475824.

The spelling of 28903874 in words is "twenty-eight million, nine hundred three thousand, eight hundred seventy-four".