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80203823 = 716097121
BaseRepresentation
bin1001100011111…
…01000000101111
312120220202221222
410301331000233
5131013010243
611543013555
71662502250
oct461750057
9176822858
1080203823
1141300357
1222a3a2bb
13138020ab
14a91ab27
157094168
hex4c7d02f

80203823 has 8 divisors (see below), whose sum is σ = 91731360. Its totient is φ = 68693760.

The previous prime is 80203811. The next prime is 80203861. The reversal of 80203823 is 32830208.

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

It is a cyclic number.

It is not a de Polignac number, because 80203823 - 210 = 80202799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80203792 and 80203801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80203423) 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, 7703 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (11466420).

Almost surely, 280203823 is an apocalyptic number.

80203823 is a deficient number, since it is larger than the sum of its proper divisors (11527537).

80203823 is a wasteful number, since it uses less digits than its factorization.

80203823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8737.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 80203823 is about 8955.6587139082. The cubic root of 80203823 is about 431.2525637879.

The spelling of 80203823 in words is "eighty million, two hundred three thousand, eight hundred twenty-three".

Divisors: 1 7 1609 7121 11263 49847 11457689 80203823