13421812 has 6 divisors (see below), whose sum is σ = 23488178. Its totient is φ = 6710904.

The previous prime is 13421797. The next prime is 13421813. The reversal of 13421812 is 21812431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10719076 + 2702736 = 3274^2 + 1644^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1677723 + ... + 1677730.

Almost surely, 2^13421812 is an apocalyptic number.

It is an amenable number.

13421812 is a deficient number, since it is larger than the sum of its proper divisors (10066366).

13421812 is a wasteful number, since it uses less digits than its factorization.

13421812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355457 (or 3355455 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 13421812 is about 3663.5791242991. The cubic root of 13421812 is about 237.6495796425.

The spelling of 13421812 in words is "thirteen million, four hundred twenty-one thousand, eight hundred twelve".