Search a number
-
+
30454712420 = 22511891579907
BaseRepresentation
bin11100010111001111…
…100000100001100100
32220121102220200112212
4130113033200201210
5444332401244140
621553554102552
72125460533016
oct342717404144
986542820485
1030454712420
1111a08989220
125a9b27aa58
132b446519c2
14168c9b21b6
15bd39e8765
hex7173e0864

30454712420 has 96 divisors (see below), whose sum is σ = 71009447040. Its totient is φ = 10879165440.

The previous prime is 30454712417. The next prime is 30454712423. The reversal of 30454712420 is 2421745403.

It is an interprime number because it is at equal distance from previous prime (30454712417) and next prime (30454712423).

It is not an unprimeable number, because it can be changed into a prime (30454712423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3069107 + ... + 3079013.

It is an arithmetic number, because the mean of its divisors is an integer number (739681740).

Almost surely, 230454712420 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 30454712420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35504723520).

30454712420 is an abundant number, since it is smaller than the sum of its proper divisors (40554734620).

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

30454712420 is a wasteful number, since it uses less digits than its factorization.

30454712420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173 (or 10171 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 30454712420 in words is "thirty billion, four hundred fifty-four million, seven hundred twelve thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 89 110 157 178 220 314 356 445 628 785 890 979 1570 1727 1780 1958 3140 3454 3916 4895 6908 8635 9790 9907 13973 17270 19580 19814 27946 34540 39628 49535 55892 69865 99070 108977 139730 153703 198140 217954 279460 307406 435908 544885 614812 768515 881723 1089770 1537030 1555399 1763446 2179540 3074060 3110798 3526892 4408615 6221596 7776995 8817230 9698953 15553990 17109389 17634460 19397906 31107980 34218778 38795812 48494765 68437556 85546945 96989530 138430511 171093890 193979060 276861022 342187780 553722044 692152555 1384305110 1522735621 2768610220 3045471242 6090942484 7613678105 15227356210 30454712420