136081428 has 36 divisors (see below), whose sum is σ = 369365472. Its totient is φ = 38880240.

The previous prime is 136081381. The next prime is 136081457. The reversal of 136081428 is 824180631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115128 + ... + 116303.

It is an arithmetic number, because the mean of its divisors is an integer number (10260152).

Almost surely, 2^136081428 is an apocalyptic number.

It is an amenable number.

136081428 is an abundant number, since it is smaller than the sum of its proper divisors (233284044).

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

136081428 is a wasteful number, since it uses less digits than its factorization.

136081428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231452 (or 231443 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 136081428 is about 11665.3944639691. The cubic root of 136081428 is about 514.3589321241.

The spelling of 136081428 in words is "one hundred thirty-six million, eighty-one thousand, four hundred twenty-eight".