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80228642 = 2133085717
BaseRepresentation
bin1001100100000…
…11000100100010
312120222001000012
410302003010202
5131014304032
611543324522
71662634514
oct462030442
9176861005
1080228642
1141317a6a
1222a50742
1313810490
14a925bb4
15709b6b2
hex4c83122

80228642 has 8 divisors (see below), whose sum is σ = 129600156. Its totient is φ = 37028592.

The previous prime is 80228633. The next prime is 80228653. The reversal of 80228642 is 24682208.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80120401 + 108241 = 8951^2 + 329^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 80228599 and 80228608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542833 + ... + 1542884.

Almost surely, 280228642 is an apocalyptic number.

80228642 is a deficient number, since it is larger than the sum of its proper divisors (49371514).

80228642 is a wasteful number, since it uses less digits than its factorization.

80228642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085732.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 80228642 is about 8957.0442669443. The cubic root of 80228642 is about 431.2970427713.

The spelling of 80228642 in words is "eighty million, two hundred twenty-eight thousand, six hundred forty-two".

Divisors: 1 2 13 26 3085717 6171434 40114321 80228642