28931050 has 12 divisors (see below), whose sum is σ = 53811846. Its totient is φ = 11572400.

The previous prime is 28931047. The next prime is 28931081. The reversal of 28931050 is 5013982.

It can be written as a sum of positive squares in 3 ways, for example, as 13082689 + 15848361 = 3617^2 + 3981^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289261 + ... + 289360.

Almost surely, 2^28931050 is an apocalyptic number.

28931050 is a deficient number, since it is larger than the sum of its proper divisors (24880796).

28931050 is a wasteful number, since it uses less digits than its factorization.

28931050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578633 (or 578628 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28931050 is about 5378.7591505848. The cubic root of 28931050 is about 306.9879994036.

The spelling of 28931050 in words is "twenty-eight million, nine hundred thirty-one thousand, fifty".