28212050 has 24 divisors (see below), whose sum is σ = 52620516. Its totient is φ = 11253440.

The previous prime is 28212047. The next prime is 28212071. The reversal of 28212050 is 5021282.

It can be written as a sum of positive squares in 6 ways, for example, as 26569 + 28185481 = 163^2 + 5309^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27344 + ... + 28356.

Almost surely, 2^28212050 is an apocalyptic number.

28212050 is a deficient number, since it is larger than the sum of its proper divisors (24408466).

28212050 is a wasteful number, since it uses less digits than its factorization.

28212050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 28212050 is about 5311.5016709025. The cubic root of 28212050 is about 304.4235281518.

The spelling of 28212050 in words is "twenty-eight million, two hundred twelve thousand, fifty".