136197888 has 72 divisors (see below), whose sum is σ = 372359568. Its totient is φ = 44163072.

The previous prime is 136197823. The next prime is 136197889. The reversal of 136197888 is 888791631.

It is a self number, because there is not a number n which added to its sum of digits gives 136197888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136197889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26020 + ... + 30812.

Almost surely, 2^136197888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136197888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186179784).

136197888 is an abundant number, since it is smaller than the sum of its proper divisors (236161680).

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

136197888 is an equidigital number, since it uses as much as digits as its factorization.

136197888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849 (or 4835 counting only the distinct ones).

The product of its digits is 580608, while the sum is 51.

The square root of 136197888 is about 11670.3850836208. The cubic root of 136197888 is about 514.5056216514.

The spelling of 136197888 in words is "one hundred thirty-six million, one hundred ninety-seven thousand, eight hundred eighty-eight".