136724540 has 24 divisors (see below), whose sum is σ = 304011792. Its totient is φ = 51472640.

The previous prime is 136724537. The next prime is 136724543. The reversal of 136724540 is 45427631.

It is an interprime number because it is at equal distance from previous prime (136724537) and next prime (136724543).

It is a junction number, because it is equal to n+sod(n) for n = 136724497 and 136724506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136724543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200726 + ... + 201405.

It is an arithmetic number, because the mean of its divisors is an integer number (12667158).

Almost surely, 2^136724540 is an apocalyptic number.

136724540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136724540 is an abundant number, since it is smaller than the sum of its proper divisors (167287252).

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

136724540 is a wasteful number, since it uses less digits than its factorization.

136724540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402157 (or 402155 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 136724540 is about 11692.9269218618. The cubic root of 136724540 is about 515.1679346757.

The spelling of 136724540 in words is "one hundred thirty-six million, seven hundred twenty-four thousand, five hundred forty".