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13804037 = 131061849
BaseRepresentation
bin110100101010…
…001000000101
3221222022120122
4310222020011
512013212122
61211511325
7225222002
oct64521005
927868518
1013804037
1178791a5
124758545
132b24190
141b948a9
15132a142
hexd2a205

13804037 has 4 divisors (see below), whose sum is σ = 14865900. Its totient is φ = 12742176.

The previous prime is 13804027. The next prime is 13804039. The reversal of 13804037 is 73040831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 7806436 = 2449^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 13804037 - 218 = 13541893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13803997 and 13804015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13804039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530912 + ... + 530937.

It is an arithmetic number, because the mean of its divisors is an integer number (3716475).

Almost surely, 213804037 is an apocalyptic number.

It is an amenable number.

13804037 is a deficient number, since it is larger than the sum of its proper divisors (1061863).

13804037 is a wasteful number, since it uses less digits than its factorization.

13804037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061862.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 13804037 is about 3715.3784464035. The cubic root of 13804037 is about 239.8844177250.

Adding to 13804037 its reverse (73040831), we get a palindrome (86844868).

The spelling of 13804037 in words is "thirteen million, eight hundred four thousand, thirty-seven".

Divisors: 1 13 1061849 13804037