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80933190 = 23513207521
BaseRepresentation
bin1001101001011…
…11000101000110
312122021211110120
410310233011012
5131204330230
612010402410
72001630552
oct464570506
9178254416
1080933190
1141759338
1223130406
13139c9080
14aa6a862
15718a310
hex4d2f146

80933190 has 32 divisors (see below), whose sum is σ = 209182176. Its totient is φ = 19921920.

The previous prime is 80933183. The next prime is 80933197. The reversal of 80933190 is 9133908.

It is an interprime number because it is at equal distance from previous prime (80933183) and next prime (80933197).

It is a super-2 number, since 2×809331902 = 13100362487152200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80933197) 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, 103371 + ... + 104150.

It is an arithmetic number, because the mean of its divisors is an integer number (6536943).

Almost surely, 280933190 is an apocalyptic number.

80933190 is an abundant number, since it is smaller than the sum of its proper divisors (128248986).

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

80933190 is a wasteful number, since it uses less digits than its factorization.

80933190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207544.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 80933190 is about 8996.2875676581. The cubic root of 80933190 is about 432.5558794897. Note that the first 3 decimals are identical.

The spelling of 80933190 in words is "eighty million, nine hundred thirty-three thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 207521 415042 622563 1037605 1245126 2075210 2697773 3112815 5395546 6225630 8093319 13488865 16186638 26977730 40466595 80933190