28501850 has 36 divisors (see below), whose sum is σ = 57422106. Its totient is φ = 10520640.

The previous prime is 28501841. The next prime is 28501871. The reversal of 28501850 is 5810582.

It can be written as a sum of positive squares in 9 ways, for example, as 1138489 + 27363361 = 1067^2 + 5231^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6764 + ... + 10136.

Almost surely, 2^28501850 is an apocalyptic number.

28501850 is an abundant number, since it is smaller than the sum of its proper divisors (28920256).

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

28501850 is a wasteful number, since it uses less digits than its factorization.

28501850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 28501850 is about 5338.7123915791. The cubic root of 28501850 is about 305.4623463477.

The spelling of 28501850 in words is "twenty-eight million, five hundred one thousand, eight hundred fifty".