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1313444 = 221129851
BaseRepresentation
bin101000000101010100100
32110201201002
411000222210
5314012234
644052432
714110166
oct5005244
92421632
101313444
118178a0
12534118
1336cab2
14262936
151ae27e
hex140aa4

1313444 has 12 divisors (see below), whose sum is σ = 2507568. Its totient is φ = 597000.

The previous prime is 1313443. The next prime is 1313447. The reversal of 1313444 is 4443131.

1313444 = 762 + 772 + ... + 1632.

It is a happy number.

It is a super-2 number, since 2×13134442 = 3450270282272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1313443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14882 + ... + 14969.

It is an arithmetic number, because the mean of its divisors is an integer number (208964).

21313444 is an apocalyptic number.

It is an amenable number.

1313444 is a deficient number, since it is larger than the sum of its proper divisors (1194124).

1313444 is a wasteful number, since it uses less digits than its factorization.

1313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29866 (or 29864 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1313444 is about 1146.0558450617. The cubic root of 1313444 is about 109.5142215149.

Adding to 1313444 its reverse (4443131), we get a palindrome (5756575).

The spelling of 1313444 in words is "one million, three hundred thirteen thousand, four hundred forty-four".

Divisors: 1 2 4 11 22 44 29851 59702 119404 328361 656722 1313444