136215648 has 96 divisors (see below), whose sum is σ = 408129120. Its totient is φ = 44167680.

The previous prime is 136215647. The next prime is 136215659. The reversal of 136215648 is 846512631.

It is a happy number.

136215648 is a `hidden beast` number, since 1 + 3 + 6 + 2 + 1 + 5 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×136215648³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136215641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29838 + ... + 34098.

It is an arithmetic number, because the mean of its divisors is an integer number (4251345).

Almost surely, 2^136215648 is an apocalyptic number.

136215648 is a gapful number since it is divisible by the number (18) 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 136215648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204064560).

136215648 is an abundant number, since it is smaller than the sum of its proper divisors (271913472).

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

136215648 is a wasteful number, since it uses less digits than its factorization.

136215648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317 (or 4303 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 136215648 is about 11671.1459591593. The cubic root of 136215648 is about 514.5279842661.

The spelling of 136215648 in words is "one hundred thirty-six million, two hundred fifteen thousand, six hundred forty-eight".