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80890068 = 22371950683
BaseRepresentation
bin1001101001001…
…00100011010100
312122012122022110
410310210203110
5131201440233
612005431020
72001361050
oct464444324
9178178273
1080890068
11417299a6
122310b470
13139b255c
14aa58c60
15717c663
hex4d248d4

80890068 has 48 divisors (see below), whose sum is σ = 227064320. Its totient is φ = 21894624.

The previous prime is 80890039. The next prime is 80890081. The reversal of 80890068 is 86009808.

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 15 ways as a sum of consecutive naturals, for example, 23746 + ... + 26937.

Almost surely, 280890068 is an apocalyptic number.

It is an amenable number.

80890068 is an abundant number, since it is smaller than the sum of its proper divisors (146174252).

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

80890068 is a wasteful number, since it uses less digits than its factorization.

80890068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50716 (or 50714 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 80890068 is about 8993.8905930637. The cubic root of 80890068 is about 432.4790424986.

The spelling of 80890068 in words is "eighty million, eight hundred ninety thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 228 266 399 532 798 1596 50683 101366 152049 202732 304098 354781 608196 709562 962977 1064343 1419124 1925954 2128686 2888931 3851908 4257372 5777862 6740839 11555724 13481678 20222517 26963356 40445034 80890068