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7916680368 = 243318325649
BaseRepresentation
bin1110101111101111…
…01111010010110000
3202102201122000212000
413113313233102300
5112203132232433
63345321534000
7400116446532
oct72767572260
922381560760
107916680368
1133a283a153
12164b344300
139921bca6c
145515b9852
1531503d113
hex1d7def4b0

7916680368 has 40 divisors (see below), whose sum is σ = 22723806000. Its totient is φ = 2638893312.

The previous prime is 7916680363. The next prime is 7916680379. The reversal of 7916680368 is 8630866197.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (7916680363) 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, 9162393 + ... + 9163256.

It is an arithmetic number, because the mean of its divisors is an integer number (568095150).

Almost surely, 27916680368 is an apocalyptic number.

It is an amenable number.

7916680368 is an abundant number, since it is smaller than the sum of its proper divisors (14807125632).

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

7916680368 is a wasteful number, since it uses less digits than its factorization.

7916680368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18325666 (or 18325654 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 7916680368 is about 88975.7290950740. The cubic root of 7916680368 is about 1993.0324521595.

The spelling of 7916680368 in words is "seven billion, nine hundred sixteen million, six hundred eighty thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 18325649 36651298 54976947 73302596 109953894 146605192 164930841 219907788 293210384 329861682 439815576 494792523 659723364 879631152 989585046 1319446728 1979170092 2638893456 3958340184 7916680368