136257240 has 96 divisors (see below), whose sum is σ = 475530480. Its totient is φ = 31143168.

The previous prime is 136257197. The next prime is 136257263. The reversal of 136257240 is 42752631.

136257240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 136257198 and 136257207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5707 + ... + 17466.

Almost surely, 2^136257240 is an apocalyptic number.

136257240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136257240 is an abundant number, since it is smaller than the sum of its proper divisors (339273240).

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

136257240 is a wasteful number, since it uses less digits than its factorization.

136257240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23201 (or 23190 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 136257240 is about 11672.9276533353. The cubic root of 136257240 is about 514.5803474870.

The spelling of 136257240 in words is "one hundred thirty-six million, two hundred fifty-seven thousand, two hundred forty".