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12792909920 = 255711422241
BaseRepresentation
bin10111110101000010…
…00101000001100000
31020000120010011021112
423322201011001200
5202144441104140
65513232242452
7632006640320
oct137241050140
936016104245
1012792909920
11547529a62a
1225903a0428
13128b5044ab
1489505d280
154ed196c65
hex2fa845060

12792909920 has 48 divisors (see below), whose sum is σ = 34540859808. Its totient is φ = 4386140160.

The previous prime is 12792909911. The next prime is 12792909937. The reversal of 12792909920 is 2990929721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5710001 + ... + 5712240.

It is an arithmetic number, because the mean of its divisors is an integer number (719601246).

Almost surely, 212792909920 is an apocalyptic number.

12792909920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12792909920 is an abundant number, since it is smaller than the sum of its proper divisors (21747949888).

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

12792909920 is a wasteful number, since it uses less digits than its factorization.

12792909920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422263 (or 11422255 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 12792909920 in words is "twelve billion, seven hundred ninety-two million, nine hundred nine thousand, nine hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 11422241 22844482 45688964 57111205 79955687 91377928 114222410 159911374 182755856 228444820 319822748 365511712 399778435 456889640 639645496 799556870 913779280 1279290992 1599113740 1827558560 2558581984 3198227480 6396454960 12792909920