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70681312830 = 23519726934441
BaseRepresentation
bin100000111010011101…
…1110011111000111110
320202102220100201101010
41001310323303320332
52124223404002310
652245345500050
75051356150302
oct1016473637076
9222386321333
1070681312830
1127a80838527
1211847041626
13688564303b
1435c72c7d02
151c8a341320
hex1074ef3e3e

70681312830 has 64 divisors (see below), whose sum is σ = 170597959488. Its totient is φ = 18741488640.

The previous prime is 70681312829. The next prime is 70681312831. The reversal of 70681312830 is 3821318607.

It is an interprime number because it is at equal distance from previous prime (70681312829) and next prime (70681312831).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70681312831) 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, 15913410 + ... + 15917850.

It is an arithmetic number, because the mean of its divisors is an integer number (2665593117).

Almost surely, 270681312830 is an apocalyptic number.

70681312830 is an abundant number, since it is smaller than the sum of its proper divisors (99916646658).

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

70681312830 is a wasteful number, since it uses less digits than its factorization.

70681312830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 70681312830 in words is "seventy billion, six hundred eighty-one million, three hundred twelve thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 197 394 591 985 1182 1970 2693 2955 4441 5386 5910 8079 8882 13323 13465 16158 22205 26646 26930 40395 44410 66615 80790 133230 530521 874877 1061042 1591563 1749754 2624631 2652605 3183126 4374385 5249262 5305210 7957815 8748770 11959613 13123155 15915630 23919226 26246310 35878839 59798065 71757678 119596130 179394195 358788390 2356043761 4712087522 7068131283 11780218805 14136262566 23560437610 35340656415 70681312830