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67872288 = 2531125843
BaseRepresentation
bin1000000101110…
…10011000100000
311201201021021110
410002322120200
5114333403123
610422423320
71452622251
oct402723040
9151637243
1067872288
1135348500
121a891b40
13110a5223
14902ab28
155e5a493
hex40ba620

67872288 has 72 divisors (see below), whose sum is σ = 195867504. Its totient is φ = 20563840.

The previous prime is 67872283. The next prime is 67872293. The reversal of 67872288 is 88227876.

It is an interprime number because it is at equal distance from previous prime (67872283) and next prime (67872293).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (67872281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8695 + ... + 14537.

It is an arithmetic number, because the mean of its divisors is an integer number (2720382).

Almost surely, 267872288 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 67872288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97933752).

67872288 is an abundant number, since it is smaller than the sum of its proper divisors (127995216).

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

67872288 is a wasteful number, since it uses less digits than its factorization.

67872288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5859 counting only the distinct ones).

The product of its digits is 602112, while the sum is 48.

The square root of 67872288 is about 8238.4639344965. The cubic root of 67872288 is about 407.9098224384.

The spelling of 67872288 in words is "sixty-seven million, eight hundred seventy-two thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 66 88 96 121 132 176 242 264 352 363 484 528 726 968 1056 1452 1936 2904 3872 5808 5843 11616 11686 17529 23372 35058 46744 64273 70116 93488 128546 140232 186976 192819 257092 280464 385638 514184 560928 707003 771276 1028368 1414006 1542552 2056736 2121009 2828012 3085104 4242018 5656024 6170208 8484036 11312048 16968072 22624096 33936144 67872288