Search a number
-
+
28545074862213 = 3713317942695269
BaseRepresentation
bin1100111110110001010110…
…00011000001100010000101
310202001212211100100212110210
412133120223003001202011
512220140303131042323
6140413232032110033
76004212364643130
oct637305303014205
9122055740325423
1028545074862213
119105997655908
123250287995319
1312c0a345b8760
147098362b9217
153477c9c09293
hex19f62b0c1885

28545074862213 has 64 divisors (see below), whose sum is σ = 48966351257600. Its totient is φ = 14386597505280.

The previous prime is 28545074862191. The next prime is 28545074862277. The reversal of 28545074862213 is 31226847054582.

It is not a de Polignac number, because 28545074862213 - 210 = 28545074861189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545074862113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20679058 + ... + 22016211.

It is an arithmetic number, because the mean of its divisors is an integer number (765099238400).

Almost surely, 228545074862213 is an apocalyptic number.

It is an amenable number.

28545074862213 is a deficient number, since it is larger than the sum of its proper divisors (20421276395387).

28545074862213 is a wasteful number, since it uses less digits than its factorization.

28545074862213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695402.

The product of its (nonzero) digits is 25804800, while the sum is 57.

The spelling of 28545074862213 in words is "twenty-eight trillion, five hundred forty-five billion, seventy-four million, eight hundred sixty-two thousand, two hundred thirteen".

Divisors: 1 3 7 13 21 31 39 79 91 93 217 237 273 403 553 651 1027 1209 1659 2449 2821 3081 7189 7347 8463 17143 21567 31837 51429 95511 222859 668577 42695269 128085807 298866883 555038497 896600649 1323553339 1665115491 3372926251 3885269479 3970660017 9264873373 10118778753 11655808437 17206193407 23610483757 27794620119 43848041263 51618580221 70831451271 104560713781 120443353849 131544123789 306936288841 313682141343 361330061547 731924996467 920808866523 1359289279153 2195774989401 4077867837459 9515024954071 28545074862213