136415540 has 24 divisors (see below), whose sum is σ = 288664992. Its totient is φ = 54148640.

The previous prime is 136415533. The next prime is 136415621. The reversal of 136415540 is 45514631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23414 + ... + 28653.

It is an arithmetic number, because the mean of its divisors is an integer number (12027708).

Almost surely, 2^136415540 is an apocalyptic number.

136415540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136415540 is an abundant number, since it is smaller than the sum of its proper divisors (152249452).

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

136415540 is a wasteful number, since it uses less digits than its factorization.

136415540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52207 (or 52205 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 136415540 is about 11679.7063319246. The cubic root of 136415540 is about 514.7795455726.

Subtracting from 136415540 its reverse (45514631), we obtain a palindrome (90900909).

The spelling of 136415540 in words is "one hundred thirty-six million, four hundred fifteen thousand, five hundred forty".