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29960979870 = 23513155713687
BaseRepresentation
bin11011111001110100…
…000100010110011110
32212100000212110211010
4123321310010112132
5442330002323440
621432555440050
72110314061353
oct337164042636
985300773733
1029960979870
1111785212698
125981a56026
132a96282573
1416431ac62a
15ba54bc580
hex6f9d0459e

29960979870 has 64 divisors (see below), whose sum is σ = 72590639616. Its totient is φ = 7913792640.

The previous prime is 29960979859. The next prime is 29960979899. The reversal of 29960979870 is 7897906992.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2182167 + ... + 2195853.

It is an arithmetic number, because the mean of its divisors is an integer number (1134228744).

Almost surely, 229960979870 is an apocalyptic number.

29960979870 is an abundant number, since it is smaller than the sum of its proper divisors (42629659746).

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

29960979870 is a wasteful number, since it uses less digits than its factorization.

29960979870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14385.

The product of its (nonzero) digits is 30862944, while the sum is 66.

The spelling of 29960979870 in words is "twenty-nine billion, nine hundred sixty million, nine hundred seventy-nine thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 131 262 393 557 655 786 1114 1310 1671 1965 2785 3342 3930 5570 8355 13687 16710 27374 41061 68435 72967 82122 136870 145934 205305 218901 364835 410610 437802 729670 1094505 1792997 2189010 3585994 5378991 7623659 8964985 10757982 15247318 17929970 22870977 26894955 38118295 45741954 53789910 76236590 114354885 228709770 998699329 1997398658 2996097987 4993496645 5992195974 9986993290 14980489935 29960979870