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73636 = 2241449
BaseRepresentation
bin10001111110100100
310202000021
4101332210
54324021
61324524
7424453
oct217644
9122007
1073636
1150362
1236744
1327694
141cb9a
1516c41
hex11fa4

73636 has 12 divisors (see below), whose sum is σ = 132300. Its totient is φ = 35840.

The previous prime is 73613. The next prime is 73637. The reversal of 73636 is 63637.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20736 + 52900 = 144^2 + 230^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73636.

It is not an unprimeable number, because it can be changed into a prime (73637) by changing a digit.

73636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61 + ... + 388.

It is an arithmetic number, because the mean of its divisors is an integer number (11025).

273636 is an apocalyptic number.

It is an amenable number.

73636 is a deficient number, since it is larger than the sum of its proper divisors (58664).

73636 is a wasteful number, since it uses less digits than its factorization.

73636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 492 counting only the distinct ones).

The product of its digits is 2268, while the sum is 25.

The square root of 73636 is about 271.3595400939. The cubic root of 73636 is about 41.9144137711.

Subtracting from 73636 its reverse (63637), we obtain a palindrome (9999).

It can be divided in two parts, 7 and 3636, that multiplied together give a palindrome (25452).

The spelling of 73636 in words is "seventy-three thousand, six hundred thirty-six".

Divisors: 1 2 4 41 82 164 449 898 1796 18409 36818 73636