13421330 has 32 divisors (see below), whose sum is σ = 27551664. Its totient is φ = 4663296.

The previous prime is 13421329. The next prime is 13421363. The reversal of 13421330 is 3312431.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8300161 + 5121169 = 2881^2 + 2263^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 13421299 and 13421308.

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 in 15 ways as a sum of consecutive naturals, for example, 827 + ... + 5246.

Almost surely, 2^13421330 is an apocalyptic number.

13421330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13421330 is an abundant number, since it is smaller than the sum of its proper divisors (14130334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13421330 is a wasteful number, since it uses less digits than its factorization.

13421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13421330 is about 3663.5133410430. The cubic root of 13421330 is about 237.6467348088.

Adding to 13421330 its reverse (3312431), we get a palindrome (16733761).

The spelling of 13421330 in words is "thirteen million, four hundred twenty-one thousand, three hundred thirty".