136947798 has 48 divisors (see below), whose sum is σ = 321528480. Its totient is φ = 42125616.

The previous prime is 136947787. The next prime is 136947817. The reversal of 136947798 is 897749631.

It is a happy number.

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, 37815 + ... + 41277.

It is an arithmetic number, because the mean of its divisors is an integer number (6698510).

Almost surely, 2^136947798 is an apocalyptic number.

136947798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136947798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160764240).

136947798 is an abundant number, since it is smaller than the sum of its proper divisors (184580682).

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

136947798 is a wasteful number, since it uses less digits than its factorization.

136947798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510 (or 3481 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 136947798 is about 11702.4697393328. The cubic root of 136947798 is about 515.4481887215.

The spelling of 136947798 in words is "one hundred thirty-six million, nine hundred forty-seven thousand, seven hundred ninety-eight".