13520146 has 8 divisors (see below), whose sum is σ = 20751984. Its totient is φ = 6602820.

The previous prime is 13520099. The next prime is 13520147. The reversal of 13520146 is 64102531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13520146² = 365588695722632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13520147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78520 + ... + 78691.

It is an arithmetic number, because the mean of its divisors is an integer number (2593998).

Almost surely, 2^13520146 is an apocalyptic number.

13520146 is a deficient number, since it is larger than the sum of its proper divisors (7231838).

13520146 is a wasteful number, since it uses less digits than its factorization.

13520146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157256.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13520146 is about 3676.9751154992. The cubic root of 13520146 is about 238.2285425619.

Adding to 13520146 its reverse (64102531), we get a palindrome (77622677).

The spelling of 13520146 in words is "thirteen million, five hundred twenty thousand, one hundred forty-six".