28126431702 has 24 divisors (see below), whose sum is σ = 61349605200. Its totient is φ = 9312553680.

The previous prime is 28126431701. The next prime is 28126431713. The reversal of 28126431702 is 20713462182.

It is a happy number.

28126431702 is a `hidden beast` number, since 2 + 8 + 1 + 2 + 643 + 1 + 7 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28126431701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5240874 + ... + 5246237.

It is an arithmetic number, because the mean of its divisors is an integer number (2556233550).

Almost surely, 2^28126431702 is an apocalyptic number.

28126431702 is an abundant number, since it is smaller than the sum of its proper divisors (33223173498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28126431702 is a wasteful number, since it uses less digits than its factorization.

28126431702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487268 (or 10487265 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 28126431702 its reverse (20713462182), we get a palindrome (48839893884).

The spelling of 28126431702 in words is "twenty-eight billion, one hundred twenty-six million, four hundred thirty-one thousand, seven hundred two".