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80407284 = 2236700607
BaseRepresentation
bin1001100101011…
…10101011110100
312121022010001120
410302232223310
5131041013114
611551223540
71664310366
oct462565364
9177263046
1080407284
114142a201
1222b17bb0
1313873899
14a970d36
1570d45a9
hex4caeaf4

80407284 has 12 divisors (see below), whose sum is σ = 187617024. Its totient is φ = 26802424.

The previous prime is 80407267. The next prime is 80407289. The reversal of 80407284 is 48270408.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80407289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350292 + ... + 3350315.

It is an arithmetic number, because the mean of its divisors is an integer number (15634752).

Almost surely, 280407284 is an apocalyptic number.

It is an amenable number.

80407284 is an abundant number, since it is smaller than the sum of its proper divisors (107209740).

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

80407284 is a wasteful number, since it uses less digits than its factorization.

80407284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700614 (or 6700612 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 80407284 is about 8967.0108731951. The cubic root of 80407284 is about 431.6169229230.

The spelling of 80407284 in words is "eighty million, four hundred seven thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 6700607 13401214 20101821 26802428 40203642 80407284