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12786880470 = 23571397109443
BaseRepresentation
bin10111110100010100…
…00100111111010110
31020000010202211102120
423322022010333112
5202141420133340
65512455120410
7631604455620
oct137212047726
936003684376
1012786880470
115471951611
12258a373106
13128a1a2c80
1489432dc10
154ec8a54d0
hex2fa284fd6

12786880470 has 256 divisors, whose sum is σ = 38596884480. Its totient is φ = 2639609856.

The previous prime is 12786880417. The next prime is 12786880487. The reversal of 12786880470 is 7408868721.

12786880470 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28864069 + ... + 28864511.

It is an arithmetic number, because the mean of its divisors is an integer number (150769080).

Almost surely, 212786880470 is an apocalyptic number.

12786880470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12786880470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19298442240).

12786880470 is an abundant number, since it is smaller than the sum of its proper divisors (25810004010).

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

12786880470 is a wasteful number, since it uses less digits than its factorization.

12786880470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 12786880470 in words is "twelve billion, seven hundred eighty-six million, eight hundred eighty thousand, four hundred seventy".