136023408 has 80 divisors (see below), whose sum is σ = 391840000. Its totient is φ = 45178560.

The previous prime is 136023401. The next prime is 136023421. The reversal of 136023408 is 804320631.

136023408 = T₁₇₉₂ + T₁₇₉₃ + ... + T₁₈₇₂.

It is a happy number.

136023408 is a `hidden beast` number, since 13 + 602 + 3 + 40 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136023401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215253 + ... + 215883.

It is an arithmetic number, because the mean of its divisors is an integer number (4898000).

Almost surely, 2^136023408 is an apocalyptic number.

136023408 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 136023408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195920000).

136023408 is an abundant number, since it is smaller than the sum of its proper divisors (255816592).

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

136023408 is a wasteful number, since it uses less digits than its factorization.

136023408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 136023408 is about 11662.9073562298. The cubic root of 136023408 is about 514.2858206349.

The spelling of 136023408 in words is "one hundred thirty-six million, twenty-three thousand, four hundred eight".