136992990 has 16 divisors (see below), whose sum is σ = 328783248. Its totient is φ = 36531456.

The previous prime is 136992967. The next prime is 136992997. The reversal of 136992990 is 99299631.

136992990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136992997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283187 + ... + 2283246.

It is an arithmetic number, because the mean of its divisors is an integer number (20548953).

Almost surely, 2^136992990 is an apocalyptic number.

136992990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136992990 is an abundant number, since it is smaller than the sum of its proper divisors (191790258).

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

136992990 is a wasteful number, since it uses less digits than its factorization.

136992990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566443.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 136992990 is about 11704.4004545299. The cubic root of 136992990 is about 515.5048808165.

The spelling of 136992990 in words is "one hundred thirty-six million, nine hundred ninety-two thousand, nine hundred ninety".