71321024 has 28 divisors (see below), whose sum is σ = 142396464. Its totient is φ = 35441664.

The previous prime is 71321023. The next prime is 71321051. The reversal of 71321024 is 42012317.

It is a junction number, because it is equal to n+sod(n) for n = 71320987 and 71321005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71321021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7352 + ... + 14024.

It is an arithmetic number, because the mean of its divisors is an integer number (5085588).

Almost surely, 2^71321024 is an apocalyptic number.

It is an amenable number.

71321024 is a deficient number, since it is larger than the sum of its proper divisors (71075440).

71321024 is a wasteful number, since it uses less digits than its factorization.

71321024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852 (or 6842 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 71321024 is about 8445.1775588202. The cubic root of 71321024 is about 414.7049220929.

The spelling of 71321024 in words is "seventy-one million, three hundred twenty-one thousand, twenty-four".