28062250 has 16 divisors (see below), whose sum is σ = 52533000. Its totient is φ = 11224800.

The previous prime is 28062239. The next prime is 28062271. The reversal of 28062250 is 5226082.

It can be written as a sum of positive squares in 4 ways, for example, as 15295921 + 12766329 = 3911^2 + 3573^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 55875 + ... + 56374.

Almost surely, 2^28062250 is an apocalyptic number.

28062250 is a deficient number, since it is larger than the sum of its proper divisors (24470750).

28062250 is a wasteful number, since it uses less digits than its factorization.

28062250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112266 (or 112256 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28062250 is about 5297.3814285928. The cubic root of 28062250 is about 303.8837635605.

The spelling of 28062250 in words is "twenty-eight million, sixty-two thousand, two hundred fifty".