28854139162 has 4 divisors (see below), whose sum is σ = 43281208746. Its totient is φ = 14427069580.

The previous prime is 28854139159. The next prime is 28854139169. The reversal of 28854139162 is 26193145882.

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

It can be written as a sum of positive squares in only one way, i.e., 28845965281 + 8173881 = 169841^2 + 2859^2 .

It is a super-2 number, since 2×28854139162² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28854139169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7213534789 + ... + 7213534792.

Almost surely, 2^28854139162 is an apocalyptic number.

28854139162 is a deficient number, since it is larger than the sum of its proper divisors (14427069584).

28854139162 is a wasteful number, since it uses less digits than its factorization.

28854139162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14427069583.

The product of its digits is 829440, while the sum is 49.

The spelling of 28854139162 in words is "twenty-eight billion, eight hundred fifty-four million, one hundred thirty-nine thousand, one hundred sixty-two".