28416350287 has 4 divisors (see below), whose sum is σ = 30602223400. Its totient is φ = 26230477176.

The previous prime is 28416350213. The next prime is 28416350297. The reversal of 28416350287 is 78205361482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28416350287 - 2³¹ = 26268866639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28416350297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092936537 + ... + 1092936562.

It is an arithmetic number, because the mean of its divisors is an integer number (7650555850).

Almost surely, 2^28416350287 is an apocalyptic number.

28416350287 is a deficient number, since it is larger than the sum of its proper divisors (2185873113).

28416350287 is a wasteful number, since it uses less digits than its factorization.

28416350287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185873112.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 28416350287 in words is "twenty-eight billion, four hundred sixteen million, three hundred fifty thousand, two hundred eighty-seven".