71906248 has 8 divisors (see below), whose sum is σ = 134824230. Its totient is φ = 35953120.

The previous prime is 71906227. The next prime is 71906249. The reversal of 71906248 is 84260917.

It can be written as a sum of positive squares in only one way, i.e., 66879684 + 5026564 = 8178^2 + 2242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (71906249) 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 as a sum of consecutive naturals, namely, 4494133 + ... + 4494148.

Almost surely, 2^71906248 is an apocalyptic number.

It is an amenable number.

71906248 is a deficient number, since it is larger than the sum of its proper divisors (62917982).

71906248 is a wasteful number, since it uses less digits than its factorization.

71906248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8988287 (or 8988283 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 71906248 is about 8479.7551851454. The cubic root of 71906248 is about 415.8361194971.

The spelling of 71906248 in words is "seventy-one million, nine hundred six thousand, two hundred forty-eight".