13421810 has 8 divisors (see below), whose sum is σ = 24159276. Its totient is φ = 5368720.

The previous prime is 13421797. The next prime is 13421813. The reversal of 13421810 is 1812431.

It can be written as a sum of positive squares in 2 ways, for example, as 12439729 + 982081 = 3527^2 + 991^2 .

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

It is a super-2 number, since 2×13421810² = 360289967352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13421813) 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, 671081 + ... + 671100.

Almost surely, 2^13421810 is an apocalyptic number.

13421810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13421810 is a deficient number, since it is larger than the sum of its proper divisors (10737466).

13421810 is a wasteful number, since it uses less digits than its factorization.

13421810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342188.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13421810 is about 3663.5788513419. The cubic root of 13421810 is about 237.6495678383.

The spelling of 13421810 in words is "thirteen million, four hundred twenty-one thousand, eight hundred ten".