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80401047 = 3193113879
BaseRepresentation
bin1001100101011…
…01001010010111
312121021210111120
410302231022113
5131040313142
611551135023
71664253246
oct462551227
9177253446
1080401047
1141425551
1222b14473
1313870aac
14a96c95d
1570d27ec
hex4cad297

80401047 has 8 divisors (see below), whose sum is σ = 107264640. Its totient is φ = 53569080.

The previous prime is 80401043. The next prime is 80401063. The reversal of 80401047 is 74010408.

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

It is not a de Polignac number, because 80401047 - 22 = 80401043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80401043) 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, 1147 + ... + 12732.

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

Almost surely, 280401047 is an apocalyptic number.

80401047 is a deficient number, since it is larger than the sum of its proper divisors (26863593).

80401047 is a wasteful number, since it uses less digits than its factorization.

80401047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 80401047 is about 8966.6630916969. The cubic root of 80401047 is about 431.6057628049.

The spelling of 80401047 in words is "eighty million, four hundred one thousand, forty-seven".

Divisors: 1 3 1931 5793 13879 41637 26800349 80401047