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73427 = 101727

73427 has 4 divisors (see below), whose sum is σ = 74256. Its totient is φ = 72600.

The previous prime is 73421. The next prime is 73433. The reversal of 73427 is 72437.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 72437 = 174261.

It is an interprime number because it is at equal distance from previous prime (73421) and next prime (73433).

It is a cyclic number.

It is not a de Polignac number, because 73427 - 26 = 73363 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 73427.

It is not an unprimeable number, because it can be changed into a prime (73421) 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, 263 + ... + 464.

It is an arithmetic number, because the mean of its divisors is an integer number (18564).

273427 is an apocalyptic number.

73427 is a deficient number, since it is larger than the sum of its proper divisors (829).

73427 is a wasteful number, since it uses less digits than its factorization.

73427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its digits is 1176, while the sum is 23.

The square root of 73427 is about 270.9741685106. The cubic root of 73427 is about 41.8747211684.

Subtracting from 73427 its reverse (72437), we obtain a triangular number (990 = T44).

The spelling of 73427 in words is "seventy-three thousand, four hundred twenty-seven", and thus it is an iban number.

Divisors: 1 101 727 73427