136434240 has 112 divisors (see below), whose sum is σ = 481340160. Its totient is φ = 36380160.

The previous prime is 136434217. The next prime is 136434257. The reversal of 136434240 is 42434631.

136434240 is a `hidden beast` number, since 13 + 643 + 4 + 2 + 4 + 0 = 666.

It is a super-2 number, since 2×136434240² = 37228603688755200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 745 + ... + 16535.

It is an arithmetic number, because the mean of its divisors is an integer number (4297680).

Almost surely, 2^136434240 is an apocalyptic number.

136434240 is a gapful number since it is divisible by the number (10) 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 136434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240670080).

136434240 is an abundant number, since it is smaller than the sum of its proper divisors (344905920).

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

136434240 is a wasteful number, since it uses less digits than its factorization.

136434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15817 (or 15801 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 136434240 is about 11680.5068383183. The cubic root of 136434240 is about 514.8030666897.

Adding to 136434240 its reverse (42434631), we get a palindrome (178868871).

The spelling of 136434240 in words is "one hundred thirty-six million, four hundred thirty-four thousand, two hundred forty".