28288703 has 2 divisors, whose sum is σ = 28288704. Its totient is φ = 28288702.

The previous prime is 28288691. The next prime is 28288747. The reversal of 28288703 is 30788282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28288703 - 2⁶ = 28288639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28288903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14144351 + 14144352.

It is an arithmetic number, because the mean of its divisors is an integer number (14144352).

Almost surely, 2^28288703 is an apocalyptic number.

28288703 is a deficient number, since it is larger than the sum of its proper divisors (1).

28288703 is an equidigital number, since it uses as much as digits as its factorization.

28288703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 28288703 is about 5318.7125321830. The cubic root of 28288703 is about 304.6989881603.

The spelling of 28288703 in words is "twenty-eight million, two hundred eighty-eight thousand, seven hundred three".