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80453443 = 721641907
BaseRepresentation
bin1001100101110…
…01111101000011
312121101110101011
410302321331003
5131044002233
611552221351
71664562100
oct462717503
9177343334
1080453443
1141460954
1222b3a857
131388b8b5
14a983aa7
1570e30cd
hex4cb9f43

80453443 has 6 divisors (see below), whose sum is σ = 93588756. Its totient is φ = 68960052.

The previous prime is 80453441. The next prime is 80453459. The reversal of 80453443 is 34435408.

It is not a de Polignac number, because 80453443 - 21 = 80453441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80453441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 820905 + ... + 821002.

It is an arithmetic number, because the mean of its divisors is an integer number (15598126).

Almost surely, 280453443 is an apocalyptic number.

80453443 is a deficient number, since it is larger than the sum of its proper divisors (13135313).

80453443 is a wasteful number, since it uses less digits than its factorization.

80453443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641921 (or 1641914 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 80453443 is about 8969.5843270466. The cubic root of 80453443 is about 431.6994991665.

The spelling of 80453443 in words is "eighty million, four hundred fifty-three thousand, four hundred forty-three".

Divisors: 1 7 49 1641907 11493349 80453443