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80213478 = 23192291277
BaseRepresentation
bin1001100011111…
…11010111100110
312120221021012120
410301333113212
5131013312403
611543130410
71662542352
oct461772746
9176837176
1080213478
1141307634
1222a43a06
13138065c7
14a920462
157096e53
hex4c7f5e6

80213478 has 48 divisors (see below), whose sum is σ = 175290480. Its totient is φ = 24437952.

The previous prime is 80213467. The next prime is 80213501. The reversal of 80213478 is 87431208.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62176 + ... + 63452.

It is an arithmetic number, because the mean of its divisors is an integer number (3651885).

Almost surely, 280213478 is an apocalyptic number.

80213478 is an abundant number, since it is smaller than the sum of its proper divisors (95077002).

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

80213478 is a wasteful number, since it uses less digits than its factorization.

80213478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 80213478 is about 8956.1977423458. The cubic root of 80213478 is about 431.2698679357.

The spelling of 80213478 in words is "eighty million, two hundred thirteen thousand, four hundred seventy-eight".

Divisors: 1 2 3 6 19 29 38 57 58 87 114 174 361 551 722 1083 1102 1277 1653 2166 2554 3306 3831 7662 10469 20938 24263 31407 37033 48526 62814 72789 74066 111099 145578 222198 460997 703627 921994 1382991 1407254 2110881 2765982 4221762 13368913 26737826 40106739 80213478