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7894325920 = 2551337671531
BaseRepresentation
bin1110101101000100…
…11101101010100000
3202101011120022022111
413112202131222200
5112131421412140
63343202445104
7366425443315
oct72642355240
922334508274
107894325920
1133911609a8
121643963794
1398a693a90
1454c63ad0c
153130c47ea
hex1d689daa0

7894325920 has 192 divisors, whose sum is σ = 20949376896. Its totient is φ = 2791895040.

The previous prime is 7894325851. The next prime is 7894325927. The reversal of 7894325920 is 295234987.

It is not an unprimeable number, because it can be changed into a prime (7894325927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5155555 + ... + 5157085.

It is an arithmetic number, because the mean of its divisors is an integer number (109111338).

Almost surely, 27894325920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7894325920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10474688448).

7894325920 is an abundant number, since it is smaller than the sum of its proper divisors (13055050976).

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

7894325920 is a wasteful number, since it uses less digits than its factorization.

7894325920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 7894325920 is about 88850.0192459180. The cubic root of 7894325920 is about 1991.1547652473.

The spelling of 7894325920 in words is "seven billion, eight hundred ninety-four million, three hundred twenty-five thousand, nine hundred twenty".