136990578 has 32 divisors (see below), whose sum is σ = 279389376. Its totient is φ = 44771328.

The previous prime is 136990549. The next prime is 136990583. The reversal of 136990578 is 875099631.

136990578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 64725 + ... + 66807.

It is an arithmetic number, because the mean of its divisors is an integer number (8730918).

Almost surely, 2^136990578 is an apocalyptic number.

136990578 is an abundant number, since it is smaller than the sum of its proper divisors (142398798).

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

136990578 is a wasteful number, since it uses less digits than its factorization.

136990578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 136990578 is about 11704.2974159067. The cubic root of 136990578 is about 515.5018553452.

The spelling of 136990578 in words is "one hundred thirty-six million, nine hundred ninety thousand, five hundred seventy-eight".