28850287 has 2 divisors, whose sum is σ = 28850288. Its totient is φ = 28850286.

The previous prime is 28850279. The next prime is 28850321. The reversal of 28850287 is 78205882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28850287 - 2³ = 28850279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28850687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14425143 + 14425144.

It is an arithmetic number, because the mean of its divisors is an integer number (14425144).

Almost surely, 2^28850287 is an apocalyptic number.

28850287 is a deficient number, since it is larger than the sum of its proper divisors (1).

28850287 is an equidigital number, since it uses as much as digits as its factorization.

28850287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 28850287 is about 5371.2463171968. The cubic root of 28850287 is about 306.7020738629.

The spelling of 28850287 in words is "twenty-eight million, eight hundred fifty thousand, two hundred eighty-seven".