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72800379998 = 2178231260137
BaseRepresentation
bin100001111001100111…
…1011010010001011110
320221220120202111001022
41003303033122101132
52143043344124443
653235524444142
75155030006553
oct1036317322136
9227816674038
1072800379998
1128968a0a005
1212138849652
136b32678838
1437488d8a2a
151d613c2e68
hex10f33da45e

72800379998 has 16 divisors (see below), whose sum is σ = 115638624864. Its totient is φ = 34254708480.

The previous prime is 72800379989. The next prime is 72800380021. The reversal of 72800379998 is 89997300827.

It is a self number, because there is not a number n which added to its sum of digits gives 72800379998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149786 + ... + 409922.

It is an arithmetic number, because the mean of its divisors is an integer number (7227414054).

Almost surely, 272800379998 is an apocalyptic number.

72800379998 is a deficient number, since it is larger than the sum of its proper divisors (42838244866).

72800379998 is a wasteful number, since it uses less digits than its factorization.

72800379998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268387.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 72800379998 in words is "seventy-two billion, eight hundred million, three hundred seventy-nine thousand, nine hundred ninety-eight".

Divisors: 1 2 17 34 8231 16462 139927 260137 279854 520274 4422329 8844658 2141187647 4282375294 36400189999 72800379998