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120386812 = 22713319103
BaseRepresentation
bin1110010110011…
…11010011111100
322101112021122211
413023033103330
5221304334222
615540150204
72661161650
oct713172374
9271467584
10120386812
1161a56437
1234398364
131bc31000
1411dbaa60
15a880277
hex72cf4fc

120386812 has 96 divisors (see below), whose sum is σ = 277222400. Its totient is φ = 44680896.

The previous prime is 120386803. The next prime is 120386813. The reversal of 120386812 is 218683021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120386813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1168753 + ... + 1168855.

Almost surely, 2120386812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120386812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138611200).

120386812 is an abundant number, since it is smaller than the sum of its proper divisors (156835588).

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

120386812 is a wasteful number, since it uses less digits than its factorization.

120386812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 120386812 is about 10972.0924166724. The cubic root of 120386812 is about 493.7718244479.

The spelling of 120386812 in words is "one hundred twenty million, three hundred eighty-six thousand, eight hundred twelve".

Divisors: 1 2 4 7 13 14 19 26 28 38 52 76 91 103 133 169 182 206 247 266 338 364 412 494 532 676 721 988 1183 1339 1442 1729 1957 2197 2366 2678 2884 3211 3458 3914 4394 4732 5356 6422 6916 7828 8788 9373 12844 13699 15379 17407 18746 22477 25441 27398 30758 34814 37492 41743 44954 50882 54796 61516 69628 83486 89908 101764 121849 166972 178087 226291 243698 292201 330733 356174 452582 487396 584402 661466 712348 905164 1168804 1322932 1584037 2315131 3168074 4299529 4630262 6336148 8599058 9260524 17198116 30096703 60193406 120386812