136881672 has 32 divisors (see below), whose sum is σ = 349488000. Its totient is φ = 44656064.

The previous prime is 136881659. The next prime is 136881673. The reversal of 136881672 is 276188631.

It is not an unprimeable number, because it can be changed into a prime (136881673) 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, 59547 + ... + 61802.

It is an arithmetic number, because the mean of its divisors is an integer number (10921500).

Almost surely, 2^136881672 is an apocalyptic number.

136881672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136881672 is an abundant number, since it is smaller than the sum of its proper divisors (212606328).

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

136881672 is a wasteful number, since it uses less digits than its factorization.

136881672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121405 (or 121401 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 136881672 is about 11699.6440971510. The cubic root of 136881672 is about 515.3652130309.

The spelling of 136881672 in words is "one hundred thirty-six million, eight hundred eighty-one thousand, six hundred seventy-two".