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12928488800 = 255216160611
BaseRepresentation
bin11000000101001100…
…10001010101100000
31020101000020021112112
430002212101111200
5202434143120200
65534514214452
7635244225113
oct140246212540
936330207475
1012928488800
115534881a97
122609884428
1312b0624396
148a907257a
1550a028535
hex302991560

12928488800 has 36 divisors (see below), whose sum is σ = 31561675236. Its totient is φ = 5171395200.

The previous prime is 12928488799. The next prime is 12928488809. The reversal of 12928488800 is 888482921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928488809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8079506 + ... + 8081105.

It is an arithmetic number, because the mean of its divisors is an integer number (876713201).

Almost surely, 212928488800 is an apocalyptic number.

12928488800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12928488800 is an abundant number, since it is smaller than the sum of its proper divisors (18633186436).

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

12928488800 is a wasteful number, since it uses less digits than its factorization.

12928488800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160631 (or 16160618 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 50.

The spelling of 12928488800 in words is "twelve billion, nine hundred twenty-eight million, four hundred eighty-eight thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 16160611 32321222 64642444 80803055 129284888 161606110 258569776 323212220 404015275 517139552 646424440 808030550 1292848880 1616061100 2585697760 3232122200 6464244400 12928488800