28957850 has 24 divisors (see below), whose sum is σ = 54086940. Its totient is φ = 11534720.

The previous prime is 28957823. The next prime is 28957853. The reversal of 28957850 is 5875982.

It can be written as a sum of positive squares in 6 ways, for example, as 452929 + 28504921 = 673^2 + 5339^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28957853) 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, 12374 + ... + 14526.

Almost surely, 2^28957850 is an apocalyptic number.

28957850 is a deficient number, since it is larger than the sum of its proper divisors (25129090).

28957850 is a wasteful number, since it uses less digits than its factorization.

28957850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 28957850 is about 5381.2498548200. The cubic root of 28957850 is about 307.0827619427.

The spelling of 28957850 in words is "twenty-eight million, nine hundred fifty-seven thousand, eight hundred fifty".