136649400 has 96 divisors (see below), whose sum is σ = 448565040. Its totient is φ = 34293760.

The previous prime is 136649393. The next prime is 136649411. The reversal of 136649400 is 4946631.

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 23 ways as a sum of consecutive naturals, for example, 3502 + ... + 16898.

Almost surely, 2^136649400 is an apocalyptic number.

136649400 is a gapful number since it is divisible by the number (10) 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 136649400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224282520).

136649400 is an abundant number, since it is smaller than the sum of its proper divisors (311915640).

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

136649400 is a wasteful number, since it uses less digits than its factorization.

136649400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13433 (or 13424 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 136649400 is about 11689.7134267697. The cubic root of 136649400 is about 515.0735433981.

The spelling of 136649400 in words is "one hundred thirty-six million, six hundred forty-nine thousand, four hundred".