28493303 has 2 divisors, whose sum is σ = 28493304. Its totient is φ = 28493302.

The previous prime is 28493299. The next prime is 28493321. The reversal of 28493303 is 30339482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28493303 - 2² = 28493299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28493303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28493323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246651 + 14246652.

It is an arithmetic number, because the mean of its divisors is an integer number (14246652).

Almost surely, 2^28493303 is an apocalyptic number.

28493303 is a deficient number, since it is larger than the sum of its proper divisors (1).

28493303 is an equidigital number, since it uses as much as digits as its factorization.

28493303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 28493303 is about 5337.9118576462. The cubic root of 28493303 is about 305.4318097604.

The spelling of 28493303 in words is "twenty-eight million, four hundred ninety-three thousand, three hundred three".