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13421444 = 224637247
BaseRepresentation
bin110011001100…
…101110000100
3221020212202112
4303030232010
511413441234
61155400152
7222036401
oct63145604
927225675
1013421444
117637803
1245b3058
132a1bcaa
141ad52a8
1512a1ace
hexcccb84

13421444 has 12 divisors (see below), whose sum is σ = 23541504. Its totient is φ = 6695304.

The previous prime is 13421437. The next prime is 13421453. The reversal of 13421444 is 44412431.

It is a happy number.

It is a nialpdrome in base 16.

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 3 ways as a sum of consecutive naturals, for example, 1772 + ... + 5475.

It is an arithmetic number, because the mean of its divisors is an integer number (1961792).

Almost surely, 213421444 is an apocalyptic number.

It is an amenable number.

13421444 is a deficient number, since it is larger than the sum of its proper divisors (10120060).

13421444 is a wasteful number, since it uses less digits than its factorization.

13421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714 (or 7712 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 13421444 is about 3663.5288998451. The cubic root of 13421444 is about 237.6474076594.

Adding to 13421444 its reverse (44412431), we get a palindrome (57833875).

The spelling of 13421444 in words is "thirteen million, four hundred twenty-one thousand, four hundred forty-four".

Divisors: 1 2 4 463 926 1852 7247 14494 28988 3355361 6710722 13421444