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80228769 = 336772869
BaseRepresentation
bin1001100100000…
…11000110100001
312120222001011220
410302003012201
5131014310034
611543325253
71662635055
oct462030641
9176861156
1080228769
1141318075
1222a50829
131381055a
14a925c65
15709b749
hex4c831a1

80228769 has 8 divisors (see below), whose sum is σ = 107264640. Its totient is φ = 53339376.

The previous prime is 80228747. The next prime is 80228777. The reversal of 80228769 is 96782208.

It is a happy number.

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

It is not a de Polignac number, because 80228769 - 29 = 80228257 is a prime.

It is a super-2 number, since 2×802287692 = 12873310750510722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80228769.

It is not an unprimeable number, because it can be changed into a prime (80228779) 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, 35334 + ... + 37535.

It is an arithmetic number, because the mean of its divisors is an integer number (13408080).

Almost surely, 280228769 is an apocalyptic number.

It is an amenable number.

80228769 is a deficient number, since it is larger than the sum of its proper divisors (27035871).

80228769 is a wasteful number, since it uses less digits than its factorization.

80228769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73239.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80228769 is about 8957.0513563337. The cubic root of 80228769 is about 431.2972703487.

The spelling of 80228769 in words is "eighty million, two hundred twenty-eight thousand, seven hundred sixty-nine".

Divisors: 1 3 367 1101 72869 218607 26742923 80228769