28216822361 has 8 divisors (see below), whose sum is σ = 34728396864. Its totient is φ = 22325397840.

The previous prime is 28216822357. The next prime is 28216822367. The reversal of 28216822361 is 16322861282.

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 28216822361 - 2² = 28216822357 is a prime.

It is a super-2 number, since 2×28216822361² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28216822367) 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, 155037395 + ... + 155037576.

It is an arithmetic number, because the mean of its divisors is an integer number (4341049608).

Almost surely, 2^28216822361 is an apocalyptic number.

It is an amenable number.

28216822361 is a deficient number, since it is larger than the sum of its proper divisors (6511574503).

28216822361 is a wasteful number, since it uses less digits than its factorization.

28216822361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310074991.

The product of its digits is 110592, while the sum is 41.

The spelling of 28216822361 in words is "twenty-eight billion, two hundred sixteen million, eight hundred twenty-two thousand, three hundred sixty-one".