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67845009930 = 23520871083613
BaseRepresentation
bin111111001011111000…
…001011001000001010
320111010020100121020120
4333023320023020022
52102421310304210
651100110004110
74621156032525
oct771370131012
9214106317216
1067845009930
1126855815145
12111951a6636
136522b44cb9
1433d8733bbc
151b71335270
hexfcbe0b20a

67845009930 has 32 divisors (see below), whose sum is σ = 162906194304. Its totient is φ = 18083317056.

The previous prime is 67845009907. The next prime is 67845009937. The reversal of 67845009930 is 3990054876.

67845009930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (67845009937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479197 + ... + 604416.

It is an arithmetic number, because the mean of its divisors is an integer number (5090818572).

Almost surely, 267845009930 is an apocalyptic number.

67845009930 is an abundant number, since it is smaller than the sum of its proper divisors (95061184374).

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

67845009930 is a wasteful number, since it uses less digits than its factorization.

67845009930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085710.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 67845009930 in words is "sixty-seven billion, eight hundred forty-five million, nine thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 2087 4174 6261 10435 12522 20870 31305 62610 1083613 2167226 3250839 5418065 6501678 10836130 16254195 32508390 2261500331 4523000662 6784500993 11307501655 13569001986 22615003310 33922504965 67845009930