71238975 has 12 divisors (see below), whose sum is σ = 117781896. Its totient is φ = 37994080.

The previous prime is 71238953. The next prime is 71238977. The reversal of 71238975 is 57983217.

It is not a de Polignac number, because 71238975 - 2¹⁵ = 71206207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71238977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474852 + ... + 475001.

It is an arithmetic number, because the mean of its divisors is an integer number (9815158).

Almost surely, 2^71238975 is an apocalyptic number.

71238975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71238975 is a deficient number, since it is larger than the sum of its proper divisors (46542921).

71238975 is a wasteful number, since it uses less digits than its factorization.

71238975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949866 (or 949861 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 71238975 is about 8440.3184181641. The cubic root of 71238975 is about 414.5458330488.

The spelling of 71238975 in words is "seventy-one million, two hundred thirty-eight thousand, nine hundred seventy-five".