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80492209 = 773157519
BaseRepresentation
bin1001100110000…
…11011010110001
312121110102112221
410303003122301
5131101222314
611553121041
71665113110
oct463033261
9177412487
1080492209
1141487a96
1222b59181
13138a3435
14a993c77
1570ee824
hex4cc36b1

80492209 has 8 divisors (see below), whose sum is σ = 93251840. Its totient is φ = 68047776.

The previous prime is 80492201. The next prime is 80492239. The reversal of 80492209 is 90229408.

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 80492209 - 23 = 80492201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80492201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78249 + ... + 79270.

It is an arithmetic number, because the mean of its divisors is an integer number (11656480).

Almost surely, 280492209 is an apocalyptic number.

It is an amenable number.

80492209 is a deficient number, since it is larger than the sum of its proper divisors (12759631).

80492209 is a wasteful number, since it uses less digits than its factorization.

80492209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157599.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 80492209 is about 8971.7450365021. The cubic root of 80492209 is about 431.7688252884.

The spelling of 80492209 in words is "eighty million, four hundred ninety-two thousand, two hundred nine".

Divisors: 1 7 73 511 157519 1102633 11498887 80492209