13230649 has 4 divisors (see below), whose sum is σ = 13250020. Its totient is φ = 13211280.

The previous prime is 13230647. The next prime is 13230661. The reversal of 13230649 is 94603231.

13230649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1452025 + 11778624 = 1205^2 + 3432^2 .

It is a cyclic number.

It is not a de Polignac number, because 13230649 - 2¹ = 13230647 is a prime.

It is a super-2 number, since 2×13230649² = 350100145922402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13230643) 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, 8622 + ... + 10039.

It is an arithmetic number, because the mean of its divisors is an integer number (3312505).

Almost surely, 2^13230649 is an apocalyptic number.

It is an amenable number.

13230649 is a deficient number, since it is larger than the sum of its proper divisors (19371).

13230649 is an equidigital number, since it uses as much as digits as its factorization.

13230649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19370.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 13230649 is about 3637.3959091636. The cubic root of 13230649 is about 236.5159222102.

It can be divided in two parts, 132306 and 49, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 13230649 in words is "thirteen million, two hundred thirty thousand, six hundred forty-nine".