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13123036252 = 221011092331279
BaseRepresentation
bin11000011100011000…
…11010010001011100
31020212120022022110201
430032030122101130
5203333444130002
610010104113244
7643125652624
oct141614322134
936776268421
1013123036252
115624680407
122662a65824
131311a1c911
148c6c35884
1551c157087
hex30e31a45c

13123036252 has 48 divisors (see below), whose sum is σ = 23524300800. Its totient is φ = 6404313600.

The previous prime is 13123036229. The next prime is 13123036259. The reversal of 13123036252 is 25263032131.

It is a self number, because there is not a number n which added to its sum of digits gives 13123036252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123036259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10259749 + ... + 10261027.

It is an arithmetic number, because the mean of its divisors is an integer number (490089600).

Almost surely, 213123036252 is an apocalyptic number.

It is an amenable number.

13123036252 is a deficient number, since it is larger than the sum of its proper divisors (10401264548).

13123036252 is a wasteful number, since it uses less digits than its factorization.

13123036252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 13123036252 its reverse (25263032131), we get a palindrome (38386068383).

The spelling of 13123036252 in words is "thirteen billion, one hundred twenty-three million, thirty-six thousand, two hundred fifty-two".

Divisors: 1 2 4 101 109 202 218 233 404 436 466 932 1279 2558 5116 11009 22018 23533 25397 44036 47066 50794 94132 101588 129179 139411 258358 278822 298007 516716 557644 596014 1192028 2565097 5130194 10260388 14080511 28161022 30098707 32482763 56322044 60197414 64965526 120394828 129931052 3280759063 6561518126 13123036252