136171540 has 48 divisors (see below), whose sum is σ = 294497280. Its totient is φ = 52859520.

The previous prime is 136171493. The next prime is 136171571. The reversal of 136171540 is 45171631.

It is a junction number, because it is equal to n+sod(n) for n = 136171499 and 136171508.

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, 163846 + ... + 164674.

It is an arithmetic number, because the mean of its divisors is an integer number (6135360).

Almost surely, 2^136171540 is an apocalyptic number.

136171540 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 136171540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147248640).

136171540 is an abundant number, since it is smaller than the sum of its proper divisors (158325740).

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

136171540 is a wasteful number, since it uses less digits than its factorization.

136171540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 136171540 is about 11669.2561888066. The cubic root of 136171540 is about 514.4724418212.

Subtracting from 136171540 its reverse (45171631), we obtain a palindrome (90999909).

The spelling of 136171540 in words is "one hundred thirty-six million, one hundred seventy-one thousand, five hundred forty".