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80407297 = 17191132203
BaseRepresentation
bin1001100101011…
…10101100000001
312121022010002001
410302232230001
5131041013142
611551224001
71664310415
oct462565401
9177263061
1080407297
114142a213
1222b18001
13138738a9
14a970d45
1570d45b7
hex4caeb01

80407297 has 16 divisors (see below), whose sum is σ = 90452160. Its totient is φ = 71027712.

The previous prime is 80407289. The next prime is 80407309. The reversal of 80407297 is 79270408.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80407297 - 23 = 80407289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80407267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35398 + ... + 37600.

It is an arithmetic number, because the mean of its divisors is an integer number (5653260).

Almost surely, 280407297 is an apocalyptic number.

It is an amenable number.

80407297 is a deficient number, since it is larger than the sum of its proper divisors (10044863).

80407297 is a wasteful number, since it uses less digits than its factorization.

80407297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 80407297 is about 8967.0115980744. The cubic root of 80407297 is about 431.6169461838.

The spelling of 80407297 in words is "eighty million, four hundred seven thousand, two hundred ninety-seven".

Divisors: 1 17 19 113 323 1921 2147 2203 36499 37451 41857 248939 711569 4231963 4729841 80407297