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80805032 = 23711472791
BaseRepresentation
bin1001101000011…
…11110010101000
312122001022122222
410310033302220
5131141230112
612003533212
72000555120
oct464176250
9178038588
1080805032
1141681020
122308a208
1313982939
14aa35c80
157162372
hex4d0fca8

80805032 has 64 divisors (see below), whose sum is σ = 192983040. Its totient is φ = 30801600.

The previous prime is 80805007. The next prime is 80805037. The reversal of 80805032 is 23050808.

It is a junction number, because it is equal to n+sod(n) for n = 80804992 and 80805010.

It is not an unprimeable number, because it can be changed into a prime (80805037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27557 + ... + 30347.

It is an arithmetic number, because the mean of its divisors is an integer number (3015360).

Almost surely, 280805032 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 80805032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96491520).

80805032 is an abundant number, since it is smaller than the sum of its proper divisors (112178008).

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

80805032 is a wasteful number, since it uses less digits than its factorization.

80805032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 80805032 is about 8989.1619186663. The cubic root of 80805032 is about 432.3274409346.

The spelling of 80805032 in words is "eighty million, eight hundred five thousand, thirty-two".

Divisors: 1 2 4 7 8 11 14 22 28 44 47 56 77 88 94 154 188 308 329 376 517 616 658 1034 1316 2068 2632 2791 3619 4136 5582 7238 11164 14476 19537 22328 28952 30701 39074 61402 78148 122804 131177 156296 214907 245608 262354 429814 524708 859628 918239 1049416 1442947 1719256 1836478 2885894 3672956 5771788 7345912 10100629 11543576 20201258 40402516 80805032