136432540 has 48 divisors (see below), whose sum is σ = 308044800. Its totient is φ = 50594112.

The previous prime is 136432523. The next prime is 136432553. The reversal of 136432540 is 45234631.

It is a super-2 number, since 2×136432540² = 37227675941703200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136432499 and 136432508.

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, 14041 + ... + 21679.

It is an arithmetic number, because the mean of its divisors is an integer number (6417600).

Almost surely, 2^136432540 is an apocalyptic number.

136432540 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 136432540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154022400).

136432540 is an abundant number, since it is smaller than the sum of its proper divisors (171612260).

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

136432540 is a wasteful number, since it uses less digits than its factorization.

136432540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714 (or 7712 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 136432540 is about 11680.4340672768. The cubic root of 136432540 is about 514.8009284951.

The spelling of 136432540 in words is "one hundred thirty-six million, four hundred thirty-two thousand, five hundred forty".