28873450 has 24 divisors (see below), whose sum is σ = 54139392. Its totient is φ = 11455920.

The previous prime is 28873447. The next prime is 28873457. The reversal of 28873450 is 5437882.

It is a super-2 number, since 2×28873450² = 1667352229805000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28873457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4077 + ... + 8623.

It is an arithmetic number, because the mean of its divisors is an integer number (2255808).

Almost surely, 2^28873450 is an apocalyptic number.

28873450 is a deficient number, since it is larger than the sum of its proper divisors (25265942).

28873450 is a wasteful number, since it uses less digits than its factorization.

28873450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686 (or 4681 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28873450 is about 5373.4020880630. The cubic root of 28873450 is about 306.7841324313.

The spelling of 28873450 in words is "twenty-eight million, eight hundred seventy-three thousand, four hundred fifty".