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13451387076 = 22327116731513
BaseRepresentation
bin11001000011100001…
…11110000011000100
31021201110011021010100
430201300332003010
5210022023341301
610102433524100
7654223621641
oct144160760304
937643137110
1013451387076
115782a59226
122734a13630
131364a65b4a
149186a8dc8
1553adb6286
hex321c3e0c4

13451387076 has 72 divisors (see below), whose sum is σ = 34688594304. Its totient is φ = 4394033280.

The previous prime is 13451387029. The next prime is 13451387077. The reversal of 13451387076 is 67078315431.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13451387077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411096 + ... + 442608.

It is an arithmetic number, because the mean of its divisors is an integer number (481786032).

Almost surely, 213451387076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13451387076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17344297152).

13451387076 is an abundant number, since it is smaller than the sum of its proper divisors (21237207228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13451387076 is a wasteful number, since it uses less digits than its factorization.

13451387076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761 (or 31756 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 13451387076 in words is "thirteen billion, four hundred fifty-one million, three hundred eighty-seven thousand, seventy-six".

Divisors: 1 2 3 4 6 9 12 18 36 71 142 167 213 284 334 426 501 639 668 852 1002 1278 1503 2004 2556 3006 6012 11857 23714 31513 35571 47428 63026 71142 94539 106713 126052 142284 189078 213426 283617 378156 426852 567234 1134468 2237423 4474846 5262671 6712269 8949692 10525342 13424538 15788013 20136807 21050684 26849076 31576026 40273614 47364039 63152052 80547228 94728078 189456156 373649641 747299282 1120948923 1494598564 2241897846 3362846769 4483795692 6725693538 13451387076