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13488437 = 40133637
BaseRepresentation
bin110011011101…
…000100110101
3221101021122202
4303131010311
511423112222
61201034245
7222435614
oct63350465
927337582
1013488437
117683076
124625985
132a43631
141b1187b
1512b6892
hexcdd135

13488437 has 4 divisors (see below), whose sum is σ = 13522476. Its totient is φ = 13454400.

The previous prime is 13488427. The next prime is 13488479. The reversal of 13488437 is 73488431.

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 7890481 + 5597956 = 2809^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 13488437 - 218 = 13226293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13488437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13488427) 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 in 3 ways as a sum of consecutive naturals, for example, 16418 + ... + 17219.

It is an arithmetic number, because the mean of its divisors is an integer number (3380619).

Almost surely, 213488437 is an apocalyptic number.

It is an amenable number.

13488437 is a deficient number, since it is larger than the sum of its proper divisors (34039).

13488437 is an equidigital number, since it uses as much as digits as its factorization.

13488437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34038.

The product of its digits is 64512, while the sum is 38.

The square root of 13488437 is about 3672.6607520979. The cubic root of 13488437 is about 238.0421564569.

The spelling of 13488437 in words is "thirteen million, four hundred eighty-eight thousand, four hundred thirty-seven".

Divisors: 1 401 33637 13488437