28211374102 has 4 divisors (see below), whose sum is σ = 42317061156. Its totient is φ = 14105687050.

The previous prime is 28211374091. The next prime is 28211374111. The reversal of 28211374102 is 20147311282.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7052843524 + ... + 7052843527.

It is an arithmetic number, because the mean of its divisors is an integer number (10579265289).

Almost surely, 2^28211374102 is an apocalyptic number.

28211374102 is a deficient number, since it is larger than the sum of its proper divisors (14105687054).

28211374102 is a wasteful number, since it uses less digits than its factorization.

28211374102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14105687053.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 28211374102 its reverse (20147311282), we get a palindrome (48358685384).

The spelling of 28211374102 in words is "twenty-eight billion, two hundred eleven million, three hundred seventy-four thousand, one hundred two".