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80250570 = 23257911287
BaseRepresentation
bin1001100100010…
…00011011001010
312121000011002100
410302020123022
5131021004240
611544014230
71663055451
oct462103312
9177004070
1080250570
1141332494
1222a61376
131381a45a
14a92db98
1570a2e30
hex4c886ca

80250570 has 48 divisors (see below), whose sum is σ = 211311360. Its totient is φ = 21127392.

The previous prime is 80250553. The next prime is 80250581. The reversal of 80250570 is 7505208.

It is a happy number.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 1467 + ... + 12753.

It is an arithmetic number, because the mean of its divisors is an integer number (4402320).

Almost surely, 280250570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80250570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105655680).

80250570 is an abundant number, since it is smaller than the sum of its proper divisors (131060790).

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

80250570 is a wasteful number, since it uses less digits than its factorization.

80250570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11379 (or 11376 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 80250570 is about 8958.2682478256. The cubic root of 80250570 is about 431.3363330622.

Adding to 80250570 its reverse (7505208), we get a palindrome (87755778).

The spelling of 80250570 in words is "eighty million, two hundred fifty thousand, five hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 79 90 158 237 395 474 711 790 1185 1422 2370 3555 7110 11287 22574 33861 56435 67722 101583 112870 169305 203166 338610 507915 891673 1015830 1783346 2675019 4458365 5350038 8025057 8916730 13375095 16050114 26750190 40125285 80250570