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19286807904 = 25327131773593
BaseRepresentation
bin10001111101100101…
…010101010101100000
31211210010112100121200
4101331211111111200
5303444410323104
612505451121200
71251642106440
oct217545252540
954703470550
1019286807904
1181a799a271
1238a3143200
131a849c9a90
14d0d6b6120
1577d33eb39
hex47d955560

19286807904 has 576 divisors, whose sum is σ = 72575927424. Its totient is φ = 4713873408.

The previous prime is 19286807879. The next prime is 19286807927. The reversal of 19286807904 is 40970868291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32523832 + ... + 32524424.

It is an arithmetic number, because the mean of its divisors is an integer number (125999874).

Almost surely, 219286807904 is an apocalyptic number.

19286807904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19286807904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36287963712).

19286807904 is an abundant number, since it is smaller than the sum of its proper divisors (53289119520).

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

19286807904 is a wasteful number, since it uses less digits than its factorization.

19286807904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 19286807904 in words is "nineteen billion, two hundred eighty-six million, eight hundred seven thousand, nine hundred four".