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30551135020 = 2257892451937
BaseRepresentation
bin11100011100111111…
…010101001100101100
32220212011100110111021
4130130333111030230
51000032042310040
622011320503524
72131041235330
oct343477251454
986764313437
1030551135020
1111a58356a1a
125b0761aba4
132b5b6120b3
14169b7117c0
15bdc1e324a
hex71cfd532c

30551135020 has 48 divisors (see below), whose sum is σ = 74146605120. Its totient is φ = 10356977664.

The previous prime is 30551135011. The next prime is 30551135023. The reversal of 30551135020 is 2053115503.

It is not an unprimeable number, because it can be changed into a prime (30551135023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213509 + ... + 1238428.

It is an arithmetic number, because the mean of its divisors is an integer number (1544720940).

Almost surely, 230551135020 is an apocalyptic number.

It is an amenable number.

30551135020 is an abundant number, since it is smaller than the sum of its proper divisors (43595470100).

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

30551135020 is a wasteful number, since it uses less digits than its factorization.

30551135020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452042 (or 2452040 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The spelling of 30551135020 in words is "thirty billion, five hundred fifty-one million, one hundred thirty-five thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 89 140 178 356 445 623 890 1246 1780 2492 3115 6230 12460 2451937 4903874 9807748 12259685 17163559 24519370 34327118 49038740 68654236 85817795 171635590 218222393 343271180 436444786 872889572 1091111965 1527556751 2182223930 3055113502 4364447860 6110227004 7637783755 15275567510 30551135020