28500446 has 16 divisors (see below), whose sum is σ = 47628000. Its totient is φ = 12700128.

The previous prime is 28500401. The next prime is 28500463. The reversal of 28500446 is 64400582.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18146 + ... + 19653.

It is an arithmetic number, because the mean of its divisors is an integer number (2976750).

Almost surely, 2^28500446 is an apocalyptic number.

28500446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28500446 is a deficient number, since it is larger than the sum of its proper divisors (19127554).

28500446 is a wasteful number, since it uses less digits than its factorization.

28500446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37843.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 28500446 is about 5338.5808975794. The cubic root of 28500446 is about 305.4573305776.

The spelling of 28500446 in words is "twenty-eight million, five hundred thousand, four hundred forty-six".