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305530028028 = 223317203164447
BaseRepresentation
bin1000111001000110000…
…00100011111111111100
31002012121220122120002000
410130203000203333330
520001211141344103
6352205240502300
731034214250131
oct4344300437774
91065556576060
10305530028028
111086358101a5
124b26947a990
1322a71727244
1410b05774588
157e32e10aa3
hex4723023ffc

305530028028 has 48 divisors (see below), whose sum is σ = 792165749760. Its totient is φ = 101836803312.

The previous prime is 305530028021. The next prime is 305530028071. The reversal of 305530028028 is 820820035503.

305530028028 is a `hidden beast` number, since 3 + 0 + 55 + 300 + 280 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 305530027983 and 305530028001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305530028021) 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, 1775701 + ... + 1940147.

It is an arithmetic number, because the mean of its divisors is an integer number (16503453120).

Almost surely, 2305530028028 is an apocalyptic number.

It is an amenable number.

305530028028 is an abundant number, since it is smaller than the sum of its proper divisors (486635721732).

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

305530028028 is a wasteful number, since it uses less digits than its factorization.

305530028028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181663 (or 181655 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 305530028028 in words is "three hundred five billion, five hundred thirty million, twenty-eight thousand, twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 17203 34406 51609 68812 103218 154827 164447 206436 309654 328894 464481 493341 619308 657788 928962 986682 1480023 1857924 1973364 2960046 4440069 5920092 8880138 17760276 2828981741 5657963482 8486945223 11315926964 16973890446 25460835669 33947780892 50921671338 76382507007 101843342676 152765014014 305530028028