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80670752 = 2523432549
BaseRepresentation
bin1001100111011…
…11000000100000
312121210111110122
410303233000200
5131122431002
612001015412
71666455461
oct463570040
9177714418
1080670752
114159a148
1223024568
1313936796
14a9dcd68
1571376a2
hex4cef020

80670752 has 48 divisors (see below), whose sum is σ = 169646400. Its totient is φ = 37669632.

The previous prime is 80670749. The next prime is 80670761. The reversal of 80670752 is 25707608.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30374 + ... + 32922.

It is an arithmetic number, because the mean of its divisors is an integer number (3534300).

Almost surely, 280670752 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 80670752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84823200).

80670752 is an abundant number, since it is smaller than the sum of its proper divisors (88975648).

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

80670752 is a wasteful number, since it uses less digits than its factorization.

80670752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2617 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 80670752 is about 8981.6898187368. The cubic root of 80670752 is about 432.0878307929.

The spelling of 80670752 in words is "eighty million, six hundred seventy thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 16 23 32 43 46 86 92 172 184 344 368 688 736 989 1376 1978 2549 3956 5098 7912 10196 15824 20392 31648 40784 58627 81568 109607 117254 219214 234508 438428 469016 876856 938032 1753712 1876064 2520961 3507424 5041922 10083844 20167688 40335376 80670752