136899828 has 96 divisors (see below), whose sum is σ = 384693120. Its totient is φ = 41852160.

The previous prime is 136899803. The next prime is 136899863. The reversal of 136899828 is 828998631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394351 + ... + 394697.

It is an arithmetic number, because the mean of its divisors is an integer number (4007220).

Almost surely, 2^136899828 is an apocalyptic number.

136899828 is a gapful number since it is divisible by the number (18) 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 136899828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192346560).

136899828 is an abundant number, since it is smaller than the sum of its proper divisors (247793292).

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

136899828 is a wasteful number, since it uses less digits than its factorization.

136899828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 646 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 136899828 is about 11700.4199924618. The cubic root of 136899828 is about 515.3879980563.

The spelling of 136899828 in words is "one hundred thirty-six million, eight hundred ninety-nine thousand, eight hundred twenty-eight".