28287178351 has 8 divisors (see below), whose sum is σ = 28962435920. Its totient is φ = 27612712512.

The previous prime is 28287178349. The next prime is 28287178411. The reversal of 28287178351 is 15387178282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28287178351 - 2¹ = 28287178349 is a prime.

It is a super-2 number, since 2×28287178351² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28287178331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125310 + ... + 268843.

It is an arithmetic number, because the mean of its divisors is an integer number (3620304490).

Almost surely, 2^28287178351 is an apocalyptic number.

28287178351 is a deficient number, since it is larger than the sum of its proper divisors (675257569).

28287178351 is a wasteful number, since it uses less digits than its factorization.

28287178351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395865.

The product of its digits is 1505280, while the sum is 52.

The spelling of 28287178351 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred seventy-eight thousand, three hundred fifty-one".