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78230407476 = 223131812770591
BaseRepresentation
bin100100011011011100…
…1010100100100110100
321110221000022110102010
41020312321110210310
52240203441014401
655534421044220
75436423330504
oct1106671244464
9243830273363
1078230407476
11301a5031021
12131b3256670
1374b9630350
143b01b39a04
15207ce6eed6
hex1236e54934

78230407476 has 48 divisors (see below), whose sum is σ = 197665115648. Its totient is φ = 23937897600.

The previous prime is 78230407433. The next prime is 78230407477. The reversal of 78230407476 is 67470403287.

It is a super-2 number, since 2×782304074762 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78230407477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357060 + ... + 1413531.

Almost surely, 278230407476 is an apocalyptic number.

It is an amenable number.

78230407476 is an abundant number, since it is smaller than the sum of its proper divisors (119434708172).

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

78230407476 is a wasteful number, since it uses less digits than its factorization.

78230407476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770792 (or 2770790 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 48.

The spelling of 78230407476 in words is "seventy-eight billion, two hundred thirty million, four hundred seven thousand, four hundred seventy-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 181 362 543 724 1086 2172 2353 4706 7059 9412 14118 28236 2770591 5541182 8311773 11082364 16623546 33247092 36017683 72035366 108053049 144070732 216106098 432212196 501476971 1002953942 1504430913 2005907884 3008861826 6017723652 6519200623 13038401246 19557601869 26076802492 39115203738 78230407476