136400540 has 48 divisors (see below), whose sum is σ = 292626432. Its totient is φ = 53395776.

The previous prime is 136400513. The next prime is 136400569. The reversal of 136400540 is 45004631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210497 + ... + 211143.

It is an arithmetic number, because the mean of its divisors is an integer number (6096384).

Almost surely, 2^136400540 is an apocalyptic number.

136400540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136400540 is an abundant number, since it is smaller than the sum of its proper divisors (156225892).

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

136400540 is a wasteful number, since it uses less digits than its factorization.

136400540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 136400540 is about 11679.0641748387. The cubic root of 136400540 is about 514.7606768127.

The spelling of 136400540 in words is "one hundred thirty-six million, four hundred thousand, five hundred forty".