136899450 has 96 divisors (see below), whose sum is σ = 393724800. Its totient is φ = 34911360.

The previous prime is 136899449. The next prime is 136899457. The reversal of 136899450 is 54998631.

It is a happy number.

136899450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 136899396 and 136899405.

It is not an unprimeable number, because it can be changed into a prime (136899457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28846 + ... + 33254.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^136899450 is an apocalyptic number.

136899450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136899450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196862400).

136899450 is an abundant number, since it is smaller than the sum of its proper divisors (256825350).

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

136899450 is a wasteful number, since it uses less digits than its factorization.

136899450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 136899450 is about 11700.4038391844. The cubic root of 136899450 is about 515.3875237025.

The spelling of 136899450 in words is "one hundred thirty-six million, eight hundred ninety-nine thousand, four hundred fifty".