71384384 has 14 divisors (see below), whose sum is σ = 141653514. Its totient is φ = 35692160.

The previous prime is 71384371. The next prime is 71384393. The reversal of 71384384 is 48348317.

It can be written as a sum of positive squares in only one way, i.e., 68425984 + 2958400 = 8272^2 + 1720^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557627 + ... + 557754.

Almost surely, 2^71384384 is an apocalyptic number.

It is an amenable number.

71384384 is a deficient number, since it is larger than the sum of its proper divisors (70269130).

71384384 is a wasteful number, since it uses less digits than its factorization.

71384384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115393 (or 1115383 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 71384384 is about 8448.9279793356. The cubic root of 71384384 is about 414.8276905993.

The spelling of 71384384 in words is "seventy-one million, three hundred eighty-four thousand, three hundred eighty-four".