28873903 has 2 divisors, whose sum is σ = 28873904. Its totient is φ = 28873902.

The previous prime is 28873877. The next prime is 28873907. The reversal of 28873903 is 30937882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28873903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28873907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14436951 + 14436952.

It is an arithmetic number, because the mean of its divisors is an integer number (14436952).

Almost surely, 2^28873903 is an apocalyptic number.

28873903 is a deficient number, since it is larger than the sum of its proper divisors (1).

28873903 is an equidigital number, since it uses as much as digits as its factorization.

28873903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 28873903 is about 5373.4442399638. Note that the first 3 decimals coincide. The cubic root of 28873903 is about 306.7857368174.

The spelling of 28873903 in words is "twenty-eight million, eight hundred seventy-three thousand, nine hundred three".