136521912 has 64 divisors (see below), whose sum is σ = 347276160. Its totient is φ = 44720000.

The previous prime is 136521907. The next prime is 136521949. The reversal of 136521912 is 219125631.

It is a super-2 number, since 2×136521912² = 37276464912271488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136521912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543787 + ... + 544037.

It is an arithmetic number, because the mean of its divisors is an integer number (5426190).

Almost surely, 2^136521912 is an apocalyptic number.

136521912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136521912 is an abundant number, since it is smaller than the sum of its proper divisors (210754248).

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

136521912 is a wasteful number, since it uses less digits than its factorization.

136521912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 560 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 136521912 is about 11684.2591549486. The cubic root of 136521912 is about 514.9133130871.

The spelling of 136521912 in words is "one hundred thirty-six million, five hundred twenty-one thousand, nine hundred twelve".