136278450 has 480 divisors, whose sum is σ = 518538240. Its totient is φ = 25660800.

The previous prime is 136278413. The next prime is 136278451. The reversal of 136278450 is 54872631.

136278450 = 326² + 327² + ... + 762².

136278450 is a `hidden beast` number, since 136 + 2 + 78 + 450 = 666.

136278450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (136278451) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 5925139 + ... + 5925161.

It is an arithmetic number, because the mean of its divisors is an integer number (1080288).

Almost surely, 2^136278450 is an apocalyptic number.

136278450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136278450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259269120).

136278450 is an abundant number, since it is smaller than the sum of its proper divisors (382259790).

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

136278450 is a wasteful number, since it uses less digits than its factorization.

136278450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 136278450 is about 11673.8361304243. The cubic root of 136278450 is about 514.6070462099.

The spelling of 136278450 in words is "one hundred thirty-six million, two hundred seventy-eight thousand, four hundred fifty".