28198360949 has 16 divisors (see below), whose sum is σ = 30951995136. Its totient is φ = 25476897600.

The previous prime is 28198360943. The next prime is 28198360951. The reversal of 28198360949 is 94906389182.

It is not a de Polignac number, because 28198360949 - 2²⁴ = 28181583733 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 (28198360943) 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 15 ways as a sum of consecutive naturals, for example, 1198004 + ... + 1221314.

It is an arithmetic number, because the mean of its divisors is an integer number (1934499696).

Almost surely, 2^28198360949 is an apocalyptic number.

It is an amenable number.

28198360949 is a deficient number, since it is larger than the sum of its proper divisors (2753634187).

28198360949 is a wasteful number, since it uses less digits than its factorization.

28198360949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23996.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 28198360949 in words is "twenty-eight billion, one hundred ninety-eight million, three hundred sixty thousand, nine hundred forty-nine".