Search a number
-
+
79013025 = 325271317227
BaseRepresentation
bin1001011010110…
…10010010100001
312111200021111100
410231122102201
5130211404100
611501305013
71646412450
oct455322241
9174607440
1079013025
1140667723
1222565169
13134a6090
14a6cab97
156e0b400
hex4b5a4a1

79013025 has 144 divisors (see below), whose sum is σ = 185238144. Its totient is φ = 31242240.

The previous prime is 79013003. The next prime is 79013029. The reversal of 79013025 is 52031097.

It is not a de Polignac number, because 79013025 - 25 = 79012993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79013025.

It is not an unprimeable number, because it can be changed into a prime (79013029) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 347962 + ... + 348188.

It is an arithmetic number, because the mean of its divisors is an integer number (1286376).

Almost surely, 279013025 is an apocalyptic number.

79013025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79013025 is an abundant number, since it is smaller than the sum of its proper divisors (106225119).

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

79013025 is a wasteful number, since it uses less digits than its factorization.

79013025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 79013025 is about 8888.9271006123. The cubic root of 79013025 is about 429.1076229243.

The spelling of 79013025 in words is "seventy-nine million, thirteen thousand, twenty-five".

Divisors: 1 3 5 7 9 13 15 17 21 25 35 39 45 51 63 65 75 85 91 105 117 119 153 175 195 221 225 227 255 273 315 325 357 425 455 525 585 595 663 681 765 819 975 1071 1105 1135 1275 1365 1547 1575 1589 1785 1989 2043 2275 2925 2951 2975 3315 3405 3825 3859 4095 4641 4767 5355 5525 5675 6825 7735 7945 8853 8925 9945 10215 11577 13923 14301 14755 16575 17025 19295 20475 20657 23205 23835 26559 26775 27013 34731 38675 39725 44265 49725 50167 51075 57885 61971 69615 71505 73775 81039 96475 103285 116025 119175 132795 135065 150501 173655 185913 221325 243117 250835 289425 309855 348075 351169 357525 405195 451503 516425 663975 675325 752505 868275 929565 1053507 1215585 1254175 1549275 1755845 2025975 2257515 3160521 3762525 4647825 5267535 6077925 8779225 11287575 15802605 26337675 79013025