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80423285 = 516084657
BaseRepresentation
bin1001100101100…
…10100101110101
312121022221000012
410302302211311
5131042021120
611551430005
71664405135
oct462624565
9177287005
1080423285
1141440228
1222b25305
131387ac57
14a976ac5
1570d91c5
hex4cb2975

80423285 has 4 divisors (see below), whose sum is σ = 96507948. Its totient is φ = 64338624.

The previous prime is 80423281. The next prime is 80423303. The reversal of 80423285 is 58232408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41460721 + 38962564 = 6439^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 80423285 - 22 = 80423281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80423281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8042324 + ... + 8042333.

It is an arithmetic number, because the mean of its divisors is an integer number (24126987).

Almost surely, 280423285 is an apocalyptic number.

It is an amenable number.

80423285 is a deficient number, since it is larger than the sum of its proper divisors (16084663).

80423285 is a wasteful number, since it uses less digits than its factorization.

80423285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084662.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 80423285 is about 8967.9030436329. The cubic root of 80423285 is about 431.6455515247.

It can be divided in two parts, 80423 and 285, that added together give a palindrome (80708).

The spelling of 80423285 in words is "eighty million, four hundred twenty-three thousand, two hundred eighty-five".

Divisors: 1 5 16084657 80423285