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30752712168 = 23367131145991
BaseRepresentation
bin11100101001000000…
…010010010111101000
32221101012122122100120
4130221000102113220
51000440143242133
622043321203240
72136036511653
oct345100222750
987335578316
1030752712168
1112051116902
125b63030520
132b912cc209
1416ba3c489a
15beec5eab3
hex7290125e8

30752712168 has 64 divisors (see below), whose sum is σ = 78625451520. Its totient is φ = 10020753600.

The previous prime is 30752712167. The next prime is 30752712227. The reversal of 30752712168 is 86121725703.

It is not an unprimeable number, because it can be changed into a prime (30752712167) 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, 137653 + ... + 283643.

It is an arithmetic number, because the mean of its divisors is an integer number (1228522680).

Almost surely, 230752712168 is an apocalyptic number.

It is an amenable number.

30752712168 is an abundant number, since it is smaller than the sum of its proper divisors (47872739352).

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

30752712168 is a wasteful number, since it uses less digits than its factorization.

30752712168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146198 (or 146194 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 30752712168 in words is "thirty billion, seven hundred fifty-two million, seven hundred twelve thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 67 131 134 201 262 268 393 402 524 536 786 804 1048 1572 1608 3144 8777 17554 26331 35108 52662 70216 105324 145991 210648 291982 437973 583964 875946 1167928 1751892 3503784 9781397 19124821 19562794 29344191 38249642 39125588 57374463 58688382 76499284 78251176 114748926 117376764 152998568 229497852 234753528 458995704 1281363007 2562726014 3844089021 5125452028 7688178042 10250904056 15376356084 30752712168