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68267472 = 24371315629
BaseRepresentation
bin1000001000110…
…10110111010000
311202110100100220
410010122313100
5114434024342
610435113040
71456156350
oct404326720
9152410326
1068267472
11355983a9
121aa42780
13111b3070
1490d0b60
155ed75ec
hex411add0

68267472 has 80 divisors (see below), whose sum is σ = 217069440. Its totient is φ = 18003456.

The previous prime is 68267471. The next prime is 68267477. The reversal of 68267472 is 27476286.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68267471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3447 + ... + 12182.

It is an arithmetic number, because the mean of its divisors is an integer number (2713368).

Almost surely, 268267472 is an apocalyptic number.

It is an amenable number.

68267472 is an abundant number, since it is smaller than the sum of its proper divisors (148801968).

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

68267472 is a wasteful number, since it uses less digits than its factorization.

68267472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660 (or 15654 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 68267472 is about 8262.4132068059. The cubic root of 68267472 is about 408.6999710581.

The spelling of 68267472 in words is "sixty-eight million, two hundred sixty-seven thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 39 42 48 52 56 78 84 91 104 112 156 168 182 208 273 312 336 364 546 624 728 1092 1456 2184 4368 15629 31258 46887 62516 93774 109403 125032 187548 203177 218806 250064 328209 375096 406354 437612 609531 656418 750192 812708 875224 1219062 1312836 1422239 1625416 1750448 2438124 2625672 2844478 3250832 4266717 4876248 5251344 5688956 8533434 9752496 11377912 17066868 22755824 34133736 68267472