136823856 has 80 divisors (see below), whose sum is σ = 393828960. Its totient is φ = 40642560.

The previous prime is 136823833. The next prime is 136823879. The reversal of 136823856 is 658328631.

It is an interprime number because it is at equal distance from previous prime (136823833) and next prime (136823879).

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, 14316 + ... + 21876.

It is an arithmetic number, because the mean of its divisors is an integer number (4922862).

Almost surely, 2^136823856 is an apocalyptic number.

136823856 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 136823856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196914480).

136823856 is an abundant number, since it is smaller than the sum of its proper divisors (257005104).

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

136823856 is a wasteful number, since it uses less digits than its factorization.

136823856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614 (or 7608 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 136823856 is about 11697.1729917959. The cubic root of 136823856 is about 515.2926429275.

The spelling of 136823856 in words is "one hundred thirty-six million, eight hundred twenty-three thousand, eight hundred fifty-six".