71234534 has 48 divisors (see below), whose sum is σ = 133024320. Its totient is φ = 28440720.

The previous prime is 71234533. The next prime is 71234543. The reversal of 71234534 is 43543217.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71234497 and 71234506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71234533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124469 + ... + 125039.

It is an arithmetic number, because the mean of its divisors is an integer number (2771340).

Almost surely, 2^71234534 is an apocalyptic number.

71234534 is a deficient number, since it is larger than the sum of its proper divisors (61789786).

71234534 is a wasteful number, since it uses less digits than its factorization.

71234534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 666 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 71234534 is about 8440.0553315722. The cubic root of 71234534 is about 414.5372186805.

The spelling of 71234534 in words is "seventy-one million, two hundred thirty-four thousand, five hundred thirty-four".