136520446 has 4 divisors (see below), whose sum is σ = 204780672. Its totient is φ = 68260222.

The previous prime is 136520443. The next prime is 136520507. The reversal of 136520446 is 644025631.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×136520446³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136520443) 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 as a sum of consecutive naturals, namely, 34130110 + ... + 34130113.

It is an arithmetic number, because the mean of its divisors is an integer number (51195168).

Almost surely, 2^136520446 is an apocalyptic number.

136520446 is a deficient number, since it is larger than the sum of its proper divisors (68260226).

136520446 is an equidigital number, since it uses as much as digits as its factorization.

136520446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68260225.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 136520446 is about 11684.1964208070. The cubic root of 136520446 is about 514.9114699993.

The spelling of 136520446 in words is "one hundred thirty-six million, five hundred twenty thousand, four hundred forty-six".