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80890760 = 23517472531
BaseRepresentation
bin1001101001001…
…00101110001000
312122012200021002
410310210232020
5131202001020
612005434132
72001363056
oct464445610
9178180232
1080890760
114172a475
122310b948
13139b2972
14aa591d6
15717c975
hex4d24b88

80890760 has 64 divisors (see below), whose sum is σ = 196888320. Its totient is φ = 29793280.

The previous prime is 80890729. The next prime is 80890763. The reversal of 80890760 is 6709808.

It is not an unprimeable number, because it can be changed into a prime (80890763) 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 15 ways as a sum of consecutive naturals, for example, 30695 + ... + 33225.

It is an arithmetic number, because the mean of its divisors is an integer number (3076380).

Almost surely, 280890760 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 80890760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98444160).

80890760 is an abundant number, since it is smaller than the sum of its proper divisors (115997560).

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

80890760 is a wasteful number, since it uses less digits than its factorization.

80890760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 80890760 is about 8993.9290635406. The cubic root of 80890760 is about 432.4802757552.

The spelling of 80890760 in words is "eighty million, eight hundred ninety thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 17 20 34 40 47 68 85 94 136 170 188 235 340 376 470 680 799 940 1598 1880 2531 3196 3995 5062 6392 7990 10124 12655 15980 20248 25310 31960 43027 50620 86054 101240 118957 172108 215135 237914 344216 430270 475828 594785 860540 951656 1189570 1721080 2022269 2379140 4044538 4758280 8089076 10111345 16178152 20222690 40445380 80890760