28198051049 has 8 divisors (see below), whose sum is σ = 32228343168. Its totient is φ = 24168258720.

The previous prime is 28198051043. The next prime is 28198051073. The reversal of 28198051049 is 94015089182.

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 28198051049 - 2¹⁶ = 28197985513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28198050994 and 28198051012.

It is not an unprimeable number, because it can be changed into a prime (28198051043) 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, 4964 + ... + 237530.

It is an arithmetic number, because the mean of its divisors is an integer number (4028542896).

Almost surely, 2^28198051049 is an apocalyptic number.

It is an amenable number.

28198051049 is a deficient number, since it is larger than the sum of its proper divisors (4030292119).

28198051049 is a wasteful number, since it uses less digits than its factorization.

28198051049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249895.

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 28198051049 in words is "twenty-eight billion, one hundred ninety-eight million, fifty-one thousand, forty-nine".