71213958 has 32 divisors (see below), whose sum is σ = 159477120. Its totient is φ = 23554440.

The previous prime is 71213903. The next prime is 71213959. The reversal of 71213958 is 85931217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71213959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2041 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (4983660).

Almost surely, 2^71213958 is an apocalyptic number.

71213958 is an abundant number, since it is smaller than the sum of its proper divisors (88263162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71213958 is a wasteful number, since it uses less digits than its factorization.

71213958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209 (or 10203 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 71213958 is about 8438.8362941818. The cubic root of 71213958 is about 414.4973019963.

The spelling of 71213958 in words is "seventy-one million, two hundred thirteen thousand, nine hundred fifty-eight".