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80654431 = 1113564017
BaseRepresentation
bin1001100111010…
…11000001011111
312121202200002011
410303223001133
5131121420211
612000412051
71666360054
oct463530137
9177680064
1080654431
1141588960
1223017027
131392c220
14a9d702b
157132921
hex4ceb05f

80654431 has 8 divisors (see below), whose sum is σ = 94755024. Its totient is φ = 67681920.

The previous prime is 80654407. The next prime is 80654437. The reversal of 80654431 is 13445608.

It is a happy number.

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 80654431 - 29 = 80653919 is a prime.

It is a super-2 number, since 2×806544312 = 13010274479867522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80654393 and 80654402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80654437) 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, 281866 + ... + 282151.

It is an arithmetic number, because the mean of its divisors is an integer number (11844378).

Almost surely, 280654431 is an apocalyptic number.

80654431 is a deficient number, since it is larger than the sum of its proper divisors (14100593).

80654431 is a wasteful number, since it uses less digits than its factorization.

80654431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564041.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 80654431 is about 8980.7812021004. The cubic root of 80654431 is about 432.0586893715.

The spelling of 80654431 in words is "eighty million, six hundred fifty-four thousand, four hundred thirty-one".

Divisors: 1 11 13 143 564017 6204187 7332221 80654431