136406256 has 80 divisors (see below), whose sum is σ = 416640000. Its totient is φ = 37626624.

The previous prime is 136406243. The next prime is 136406297. The reversal of 136406256 is 652604631.

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, 2745 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (5208000).

Almost surely, 2^136406256 is an apocalyptic number.

136406256 is a gapful number since it is divisible by the number (16) 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 136406256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208320000).

136406256 is an abundant number, since it is smaller than the sum of its proper divisors (280233744).

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

136406256 is a wasteful number, since it uses less digits than its factorization.

136406256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14046 (or 14040 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 136406256 is about 11679.3088836626. The cubic root of 136406256 is about 514.7678672312.

The spelling of 136406256 in words is "one hundred thirty-six million, four hundred six thousand, two hundred fifty-six".