Search a number
-
+
71342707 = 238929863
BaseRepresentation
bin1000100000010…
…01101001110011
311222020120210111
410100021221303
5121230431312
611025042151
71524255142
oct420115163
9158216714
1071342707
11372a8917
121ba86357
1311a1ba27
149691759
1563e38a7
hex4409a73

71342707 has 4 divisors (see below), whose sum is σ = 71374960. Its totient is φ = 71310456.

The previous prime is 71342699. The next prime is 71342729. The reversal of 71342707 is 70724317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70724317 = 695910163.

It is a cyclic number.

It is not a de Polignac number, because 71342707 - 23 = 71342699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71342737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12543 + ... + 17320.

It is an arithmetic number, because the mean of its divisors is an integer number (17843740).

Almost surely, 271342707 is an apocalyptic number.

71342707 is a deficient number, since it is larger than the sum of its proper divisors (32253).

71342707 is a wasteful number, since it uses less digits than its factorization.

71342707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32252.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71342707 is about 8446.4612116554. The cubic root of 71342707 is about 414.7469439971.

The spelling of 71342707 in words is "seventy-one million, three hundred forty-two thousand, seven hundred seven".

Divisors: 1 2389 29863 71342707