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80808369 = 347573109
BaseRepresentation
bin1001101000100…
…00100110110001
312122001111020120
410310100212301
5131141331434
612004000453
72000600625
oct464204661
9178044216
1080808369
1141683584
1223090129
1313984305
14aa37185
157163349
hex4d109b1

80808369 has 8 divisors (see below), whose sum is σ = 110037120. Its totient is φ = 52725936.

The previous prime is 80808367. The next prime is 80808401. The reversal of 80808369 is 96380808.

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

It is not a de Polignac number, because 80808369 - 21 = 80808367 is a prime.

It is a super-2 number, since 2×808083692 = 13059985000880322, 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 80808369.

It is not an unprimeable number, because it can be changed into a prime (80808367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286414 + ... + 286695.

It is an arithmetic number, because the mean of its divisors is an integer number (13754640).

Almost surely, 280808369 is an apocalyptic number.

It is an amenable number.

80808369 is a deficient number, since it is larger than the sum of its proper divisors (29228751).

80808369 is a wasteful number, since it uses less digits than its factorization.

80808369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573159.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 80808369 is about 8989.3475291592. The cubic root of 80808369 is about 432.3333921185. Note that the first 4 decimals are identical.

The spelling of 80808369 in words is "eighty million, eight hundred eight thousand, three hundred sixty-nine".

Divisors: 1 3 47 141 573109 1719327 26936123 80808369