28027759870 has 16 divisors (see below), whose sum is σ = 55036328688. Its totient is φ = 10191912640.

The previous prime is 28027759847. The next prime is 28027759871. The reversal of 28027759870 is 7895772082.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027759871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127398799 + ... + 127399018.

It is an arithmetic number, because the mean of its divisors is an integer number (3439770543).

Almost surely, 2^28027759870 is an apocalyptic number.

28027759870 is a deficient number, since it is larger than the sum of its proper divisors (27008568818).

28027759870 is a wasteful number, since it uses less digits than its factorization.

28027759870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254797835.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 28027759870 in words is "twenty-eight billion, twenty-seven million, seven hundred fifty-nine thousand, eight hundred seventy".