28887283 has 2 divisors, whose sum is σ = 28887284. Its totient is φ = 28887282.

The previous prime is 28887253. The next prime is 28887307. The reversal of 28887283 is 38278882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28887283 - 2¹³ = 28879091 is a prime.

It is not a weakly prime, because it can be changed into another prime (28887223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14443641 + 14443642.

It is an arithmetic number, because the mean of its divisors is an integer number (14443642).

Almost surely, 2^28887283 is an apocalyptic number.

28887283 is a deficient number, since it is larger than the sum of its proper divisors (1).

28887283 is an equidigital number, since it uses as much as digits as its factorization.

28887283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 46.

The square root of 28887283 is about 5374.6891072880. The cubic root of 28887283 is about 306.8331170795.

It can be divided in two parts, 288 and 87283, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 28887283 in words is "twenty-eight million, eight hundred eighty-seven thousand, two hundred eighty-three".