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71413297 = 223320239
BaseRepresentation
bin1000100000110…
…10111000110001
311222101011121221
410100122320301
5121240211142
611030345041
71525001014
oct420327061
9158334557
1071413297
113734695a
121babb181
1311a44bb7
1496ad37b
156409767
hex441ae31

71413297 has 4 divisors (see below), whose sum is σ = 71733760. Its totient is φ = 71092836.

The previous prime is 71413273. The next prime is 71413301. The reversal of 71413297 is 79231417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79231417 = 233340049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-71413297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71413217) 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, 159897 + ... + 160342.

It is an arithmetic number, because the mean of its divisors is an integer number (17933440).

Almost surely, 271413297 is an apocalyptic number.

It is an amenable number.

71413297 is a deficient number, since it is larger than the sum of its proper divisors (320463).

71413297 is a wasteful number, since it uses less digits than its factorization.

71413297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320462.

The product of its digits is 10584, while the sum is 34.

The square root of 71413297 is about 8450.6388515899. The cubic root of 71413297 is about 414.8836892805.

The spelling of 71413297 in words is "seventy-one million, four hundred thirteen thousand, two hundred ninety-seven".

Divisors: 1 223 320239 71413297