13380146 has 8 divisors (see below), whose sum is σ = 21614124. Its totient is φ = 6175440.

The previous prime is 13380137. The next prime is 13380149. The reversal of 13380146 is 64108331.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 855625 = 3539^2 + 925^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 514621 = 13380146 / (1 + 3 + 3 + 8 + 0 + 1 + 4 + 6).

It is not an unprimeable number, because it can be changed into a prime (13380149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257285 + ... + 257336.

Almost surely, 2^13380146 is an apocalyptic number.

13380146 is a deficient number, since it is larger than the sum of its proper divisors (8233978).

13380146 is a wasteful number, since it uses less digits than its factorization.

13380146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514636.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 13380146 is about 3657.8881885591. Note that the first 3 decimals coincide. The cubic root of 13380146 is about 237.4034089212.

Adding to 13380146 its reverse (64108331), we get a palindrome (77488477).

The spelling of 13380146 in words is "thirteen million, three hundred eighty thousand, one hundred forty-six".