13421008 has 10 divisors (see below), whose sum is σ = 26003234. Its totient is φ = 6710496.

The previous prime is 13420999. The next prime is 13421021. The reversal of 13421008 is 80012431.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 2050624 = 3372^2 + 1432^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 419391 + ... + 419422.

Almost surely, 2^13421008 is an apocalyptic number.

It is an amenable number.

13421008 is a deficient number, since it is larger than the sum of its proper divisors (12582226).

13421008 is an equidigital number, since it uses as much as digits as its factorization.

13421008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838821 (or 838815 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13421008 is about 3663.4693938943. The cubic root of 13421008 is about 237.6448342803.

Adding to 13421008 its reverse (80012431), we get a palindrome (93433439).

The spelling of 13421008 in words is "thirteen million, four hundred twenty-one thousand, eight".