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80473047 = 3162716487
BaseRepresentation
bin1001100101111…
…10101111010111
312121102110021020
410302332233113
5131100114142
611552452223
71665003204
oct462765727
9177373236
1080473047
1141474656
1222b4a073
13138977b5
14a98acab
1570e8cec
hex4cbebd7

80473047 has 8 divisors (see below), whose sum is σ = 107369856. Its totient is φ = 53612472.

The previous prime is 80473007. The next prime is 80473049. The reversal of 80473047 is 74037408.

It is a happy number.

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

It is not a de Polignac number, because 80473047 - 26 = 80472983 is a prime.

It is a super-2 number, since 2×804730472 = 12951822586928418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80472999 and 80473017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80473049) 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, 3363 + ... + 13124.

It is an arithmetic number, because the mean of its divisors is an integer number (13421232).

Almost surely, 280473047 is an apocalyptic number.

80473047 is a deficient number, since it is larger than the sum of its proper divisors (26896809).

80473047 is a wasteful number, since it uses less digits than its factorization.

80473047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18117.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 80473047 is about 8970.6770647482. The cubic root of 80473047 is about 431.7345602294.

The spelling of 80473047 in words is "eighty million, four hundred seventy-three thousand, forty-seven".

Divisors: 1 3 1627 4881 16487 49461 26824349 80473047