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30078916278 = 23157123125939
BaseRepresentation
bin11100000000110101…
…111101011010110110
32212122020210021011020
4130000311331122312
5443100200310103
621452411322010
72113245366315
oct340065753266
985566707136
1030078916278
1111835844aa4
1259b5450306
132ab4836118
141654b0c27c
15bb0a16753
hex700d7d6b6

30078916278 has 32 divisors (see below), whose sum is σ = 60592519680. Its totient is φ = 9953966880.

The previous prime is 30078916249. The next prime is 30078916279. The reversal of 30078916278 is 87261987003.

It is a self number, because there is not a number n which added to its sum of digits gives 30078916278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30078916279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146633 + ... + 1172571.

It is an arithmetic number, because the mean of its divisors is an integer number (1893516240).

Almost surely, 230078916278 is an apocalyptic number.

30078916278 is an abundant number, since it is smaller than the sum of its proper divisors (30513603402).

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

30078916278 is a wasteful number, since it uses less digits than its factorization.

30078916278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27332.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 30078916278 in words is "thirty billion, seventy-eight million, nine hundred sixteen thousand, two hundred seventy-eight".

Divisors: 1 2 3 6 157 314 471 942 1231 2462 3693 7386 25939 51878 77817 155634 193267 386534 579801 1159602 4072423 8144846 12217269 24434538 31930909 63861818 95792727 191585454 5013152713 10026305426 15039458139 30078916278