136829988 has 36 divisors (see below), whose sum is σ = 346248448. Its totient is φ = 45560880.

The previous prime is 136829971. The next prime is 136830037. The reversal of 136829988 is 889928631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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, 49893 + ... + 52563.

Almost surely, 2^136829988 is an apocalyptic number.

136829988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136829988 is an abundant number, since it is smaller than the sum of its proper divisors (209418460).

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

136829988 is a wasteful number, since it uses less digits than its factorization.

136829988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104 (or 4099 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 136829988 is about 11697.4351034746. The cubic root of 136829988 is about 515.3003407256.

The spelling of 136829988 in words is "one hundred thirty-six million, eight hundred twenty-nine thousand, nine hundred eighty-eight".