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815482068740 = 225712543225829
BaseRepresentation
bin10111101110111101000…
…01001101111100000100
32212221220100101022122222
423313132201031330010
5101330101402144430
61422343254511512
7112626256133453
oct13673641157404
92787810338588
10815482068740
11294931406129
12112067365598
135bb9063cbb1
142b6805d4b9a
151632c5cb9e5
hexbdde84df04

815482068740 has 48 divisors (see below), whose sum is σ = 1737322836480. Its totient is φ = 321470674560.

The previous prime is 815482068733. The next prime is 815482068763. The reversal of 815482068740 is 47860284518.

It is a super-2 number, since 2×8154820687402 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3498146 + ... + 3723974.

It is an arithmetic number, because the mean of its divisors is an integer number (36194225760).

Almost surely, 2815482068740 is an apocalyptic number.

It is an amenable number.

815482068740 is an abundant number, since it is smaller than the sum of its proper divisors (921840767740).

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

815482068740 is a wasteful number, since it uses less digits than its factorization.

815482068740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228452 (or 228450 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 815482068740 in words is "eight hundred fifteen billion, four hundred eighty-two million, sixty-eight thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 2543 5086 10172 12715 25430 50860 180553 225829 361106 451658 722212 902765 903316 1129145 1805530 2258290 3611060 4516580 16033859 32067718 64135436 80169295 160338590 320677180 574283147 1148566294 2297132588 2871415735 5742831470 11485662940 40774103437 81548206874 163096413748 203870517185 407741034370 815482068740