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72852768 = 25321311931
BaseRepresentation
bin1000101011110…
…10010100100000
312002002022012200
410111322110200
5122122242033
611121253200
71543144512
oct425722440
9162068180
1072852768
113813a3aa
1220494200
131212a161
149965bb2
1565e1013
hex457a520

72852768 has 72 divisors (see below), whose sum is σ = 208864656. Its totient is φ = 24086400.

The previous prime is 72852761. The next prime is 72852781. The reversal of 72852768 is 86725827.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (72852761) 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 11 ways as a sum of consecutive naturals, for example, 36763 + ... + 38693.

It is an arithmetic number, because the mean of its divisors is an integer number (2900898).

Almost surely, 272852768 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 72852768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104432328).

72852768 is an abundant number, since it is smaller than the sum of its proper divisors (136011888).

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

72852768 is a wasteful number, since it uses less digits than its factorization.

72852768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 2067 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 72852768 is about 8535.3832954355. The cubic root of 72852768 is about 417.6527567998.

The spelling of 72852768 in words is "seventy-two million, eight hundred fifty-two thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 131 144 262 288 393 524 786 1048 1179 1572 1931 2096 2358 3144 3862 4192 4716 5793 6288 7724 9432 11586 12576 15448 17379 18864 23172 30896 34758 37728 46344 61792 69516 92688 139032 185376 252961 278064 505922 556128 758883 1011844 1517766 2023688 2276649 3035532 4047376 4553298 6071064 8094752 9106596 12142128 18213192 24284256 36426384 72852768