13436890 has 8 divisors (see below), whose sum is σ = 24186420. Its totient is φ = 5374752.

The previous prime is 13436879. The next prime is 13436893. The reversal of 13436890 is 9863431.

It can be written as a sum of positive squares in 2 ways, for example, as 13417569 + 19321 = 3663^2 + 139^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13436893) 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 in 3 ways as a sum of consecutive naturals, for example, 671835 + ... + 671854.

Almost surely, 2^13436890 is an apocalyptic number.

13436890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13436890 is a deficient number, since it is larger than the sum of its proper divisors (10749530).

13436890 is a wasteful number, since it uses less digits than its factorization.

13436890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343696.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 13436890 is about 3665.6363704001. The cubic root of 13436890 is about 237.7385378096.

The spelling of 13436890 in words is "thirteen million, four hundred thirty-six thousand, eight hundred ninety".