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12972996580 = 2252457126399
BaseRepresentation
bin11000001010100000…
…00011011111100100
31020111002222111201211
430011100003133210
5203032041342310
65543144201204
7636324436315
oct140520033744
936432874654
1012972996580
115557a11385
122620769204
1312b990894b
148b0d3a60c
1550ddbac8a
hex3054037e4

12972996580 has 24 divisors (see below), whose sum is σ = 27245433600. Its totient is φ = 5188790880.

The previous prime is 12972996577. The next prime is 12972996581. The reversal of 12972996580 is 8569927921.

It is not an unprimeable number, because it can be changed into a prime (12972996581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478221 + ... + 504619.

It is an arithmetic number, because the mean of its divisors is an integer number (1135226400).

Almost surely, 212972996580 is an apocalyptic number.

12972996580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12972996580 is an abundant number, since it is smaller than the sum of its proper divisors (14272437020).

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

12972996580 is a wasteful number, since it uses less digits than its factorization.

12972996580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50979 (or 50977 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 12972996580 in words is "twelve billion, nine hundred seventy-two million, nine hundred ninety-six thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 24571 26399 49142 52798 98284 105596 122855 131995 245710 263990 491420 527980 648649829 1297299658 2594599316 3243249145 6486498290 12972996580