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80415071 = 1117342257
BaseRepresentation
bin1001100101100…
…00100101011111
312121022111201222
410302300211133
5131041240241
611551323555
71664342162
oct462604537
9177274658
1080415071
1141435040
1222b205bb
13138772a9
14a973ad9
1570d6a4b
hex4cb095f

80415071 has 8 divisors (see below), whose sum is σ = 88234704. Its totient is φ = 72680320.

The previous prime is 80415067. The next prime is 80415079. The reversal of 80415071 is 17051408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80415071 - 22 = 80415067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80415071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80415079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19226 + ... + 23031.

It is an arithmetic number, because the mean of its divisors is an integer number (11029338).

Almost surely, 280415071 is an apocalyptic number.

80415071 is a deficient number, since it is larger than the sum of its proper divisors (7819633).

80415071 is a wasteful number, since it uses less digits than its factorization.

80415071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42441.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 80415071 is about 8967.4450653461. The cubic root of 80415071 is about 431.6308557092.

Adding to 80415071 its reverse (17051408), we get a palindrome (97466479).

The spelling of 80415071 in words is "eighty million, four hundred fifteen thousand, seventy-one".

Divisors: 1 11 173 1903 42257 464827 7310461 80415071