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30009717290 = 257261244321
BaseRepresentation
bin11011111100101101…
…111111001000101010
32212110102120120222202
4123330231333020222
5442424441423130
621441500220202
72111445250100
oct337455771052
985412516882
1030009717290
11117aa780853
12599623a662
132aa33b8087
141649857c70
15ba98e8145
hex6fcb7f22a

30009717290 has 24 divisors (see below), whose sum is σ = 62836674372. Its totient is φ = 10289045760.

The previous prime is 30009717289. The next prime is 30009717323. The reversal of 30009717290 is 9271790003.

It can be written as a sum of positive squares in 2 ways, for example, as 29693837761 + 315879529 = 172319^2 + 17773^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30621671 + ... + 30622650.

Almost surely, 230009717290 is an apocalyptic number.

30009717290 is an abundant number, since it is smaller than the sum of its proper divisors (32826957082).

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

30009717290 is a wasteful number, since it uses less digits than its factorization.

30009717290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61244342 (or 61244335 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The spelling of 30009717290 in words is "thirty billion, nine million, seven hundred seventeen thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 61244321 122488642 306221605 428710247 612443210 857420494 2143551235 3000971729 4287102470 6001943458 15004858645 30009717290