136873872 has 90 divisors (see below), whose sum is σ = 404432262. Its totient is φ = 43206912.

The previous prime is 136873837. The next prime is 136873921. The reversal of 136873872 is 278378631.

It can be written as a sum of positive squares in only one way, i.e., 96118416 + 40755456 = 9804^2 + 6384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50668 + ... + 53300.

Almost surely, 2^136873872 is an apocalyptic number.

136873872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136873872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202216131).

136873872 is an abundant number, since it is smaller than the sum of its proper divisors (267558390).

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

136873872 is a wasteful number, since it uses less digits than its factorization.

136873872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685 (or 2657 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 136873872 is about 11699.3107489288. The cubic root of 136873872 is about 515.3554237363.

The spelling of 136873872 in words is "one hundred thirty-six million, eight hundred seventy-three thousand, eight hundred seventy-two".