28913109370 has 16 divisors (see below), whose sum is σ = 52090209288. Its totient is φ = 11554885440.

The previous prime is 28913109361. The next prime is 28913109371. The reversal of 28913109370 is 7390131982.

It can be written as a sum of positive squares in 4 ways, for example, as 6696312561 + 22216796809 = 81831^2 + 149053^2 .

It is not an unprimeable number, because it can be changed into a prime (28913109371) 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, 1283061 + ... + 1305400.

Almost surely, 2^28913109370 is an apocalyptic number.

28913109370 is a deficient number, since it is larger than the sum of its proper divisors (23177099918).

28913109370 is a wasteful number, since it uses less digits than its factorization.

28913109370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589585.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 28913109370 in words is "twenty-eight billion, nine hundred thirteen million, one hundred nine thousand, three hundred seventy".