28134702140 has 24 divisors (see below), whose sum is σ = 59111110800. Its totient is φ = 11248502528.

The previous prime is 28134702139. The next prime is 28134702149. The reversal of 28134702140 is 4120743182.

It is a super-2 number, since 2×28134702140² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28134702097 and 28134702106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134702149) 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, 293117 + ... + 377076.

It is an arithmetic number, because the mean of its divisors is an integer number (2462962950).

Almost surely, 2^28134702140 is an apocalyptic number.

28134702140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28134702140 is an abundant number, since it is smaller than the sum of its proper divisors (30976408660).

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

28134702140 is a wasteful number, since it uses less digits than its factorization.

28134702140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672301 (or 672299 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 28134702140 in words is "twenty-eight billion, one hundred thirty-four million, seven hundred two thousand, one hundred forty".