28985503 has 2 divisors, whose sum is σ = 28985504. Its totient is φ = 28985502.

The previous prime is 28985491. The next prime is 28985519. The reversal of 28985503 is 30558982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28985503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28985533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14492751 + 14492752.

It is an arithmetic number, because the mean of its divisors is an integer number (14492752).

Almost surely, 2^28985503 is an apocalyptic number.

28985503 is a deficient number, since it is larger than the sum of its proper divisors (1).

28985503 is an equidigital number, since it uses as much as digits as its factorization.

28985503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 28985503 is about 5383.8186262169. The cubic root of 28985503 is about 307.1804793493.

The spelling of 28985503 in words is "twenty-eight million, nine hundred eighty-five thousand, five hundred three".