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13107502144 = 2611213012
BaseRepresentation
bin11000011010100010…
…01001110001000000
31020211111002002200101
430031101021301000
5203321010032034
610004351132144
7642546633652
oct141521116100
936744062611
1013107502144
115616930400
122659814054
13130b741139
148c4b506d2
1551aad9514
hex30d449c40

13107502144 has 63 divisors (see below), whose sum is σ = 28611715573. Its totient is φ = 5953376000.

The previous prime is 13107502141. The next prime is 13107502147. The reversal of 13107502144 is 44120570131.

The square root of 13107502144 is 114488.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (13107502141) and next prime (13107502147).

It can be written as a sum of positive squares in only one way, i.e., 20142144 + 13087360000 = 4488^2 + 114400^2 .

It is a super-2 number, since 2×131075021442 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13107502141) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10074294 + ... + 10075594.

Almost surely, 213107502144 is an apocalyptic number.

13107502144 is the 114488-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13107502144

13107502144 is an abundant number, since it is smaller than the sum of its proper divisors (15504213429).

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

13107502144 is an frugal number, since it uses more digits than its factorization.

13107502144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 13107502144 in words is "thirteen billion, one hundred seven million, five hundred two thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 16 22 32 44 64 88 121 176 242 352 484 704 968 1301 1936 2602 3872 5204 7744 10408 14311 20816 28622 41632 57244 83264 114488 157421 228976 314842 457952 629684 915904 1259368 1692601 2518736 3385202 5037472 6770404 10074944 13540808 18618611 27081616 37237222 54163232 74474444 108326464 148948888 204804721 297897776 409609442 595795552 819218884 1191591104 1638437768 3276875536 6553751072 13107502144