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769400008540 = 225139556949697
BaseRepresentation
bin10110011001000111101…
…00000110111101011100
32201112221210212010001121
423030203310012331130
5100101212400233130
61345242452220324
7106405310110642
oct13144364067534
92645853763047
10769400008540
11277334279259
1210514660a6a4
13577284bc857
142934c377192
1515031b9cd7a
hexb323d06f5c

769400008540 has 48 divisors (see below), whose sum is σ = 1627689016800. Its totient is φ = 305484890112.

The previous prime is 769400008537. The next prime is 769400008541. The reversal of 769400008540 is 45800004967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769400008541) 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, 15456972 + ... + 15506668.

It is an arithmetic number, because the mean of its divisors is an integer number (33910187850).

Almost surely, 2769400008540 is an apocalyptic number.

It is an amenable number.

769400008540 is an abundant number, since it is smaller than the sum of its proper divisors (858289008260).

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

769400008540 is a wasteful number, since it uses less digits than its factorization.

769400008540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55414 (or 55412 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 769400008540 in words is "seven hundred sixty-nine billion, four hundred million, eight thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 5569 11138 22276 27845 49697 55690 99394 111380 198788 248485 496970 774091 993940 1548182 3096364 3870455 6907883 7740910 13815766 15481820 27631532 34539415 69078830 138157660 276762593 553525186 1107050372 1383812965 2767625930 5535251860 38470000427 76940000854 153880001708 192350002135 384700004270 769400008540