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80418243 = 326806081
BaseRepresentation
bin1001100101100…
…01010111000011
312121022200002110
410302301113003
5131041340433
611551350403
71664354343
oct462612703
9177280073
1080418243
1141437464
1222b22403
1313878879
14a974d23
1570d7963
hex4cb15c3

80418243 has 4 divisors (see below), whose sum is σ = 107224328. Its totient is φ = 53612160.

The previous prime is 80418227. The next prime is 80418257. The reversal of 80418243 is 34281408.

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

It is not a de Polignac number, because 80418243 - 24 = 80418227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80418243.

It is not an unprimeable number, because it can be changed into a prime (80418043) 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 3 ways as a sum of consecutive naturals, for example, 13403038 + ... + 13403043.

It is an arithmetic number, because the mean of its divisors is an integer number (26806082).

Almost surely, 280418243 is an apocalyptic number.

80418243 is a deficient number, since it is larger than the sum of its proper divisors (26806085).

80418243 is a wasteful number, since it uses less digits than its factorization.

80418243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806084.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 80418243 is about 8967.6219255720. The cubic root of 80418243 is about 431.6365309102.

The spelling of 80418243 in words is "eighty million, four hundred eighteen thousand, two hundred forty-three".

Divisors: 1 3 26806081 80418243