136987632 has 160 divisors (see below), whose sum is σ = 434972160. Its totient is φ = 41057280.

The previous prime is 136987589. The next prime is 136987633. The reversal of 136987632 is 236789631.

136987632 is a `hidden beast` number, since 1 + 3 + 6 + 9 + 8 + 7 + 632 = 666.

It is a super-2 number, since 2×136987632² = 37531222641934848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136987633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168507 + ... + 169317.

It is an arithmetic number, because the mean of its divisors is an integer number (2718576).

Almost surely, 2^136987632 is an apocalyptic number.

136987632 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 136987632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217486080).

136987632 is an abundant number, since it is smaller than the sum of its proper divisors (297984528).

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

136987632 is a wasteful number, since it uses less digits than its factorization.

136987632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 856 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 136987632 is about 11704.1715640194. The cubic root of 136987632 is about 515.4981600075.

The spelling of 136987632 in words is "one hundred thirty-six million, nine hundred eighty-seven thousand, six hundred thirty-two".