71903387 has 8 divisors (see below), whose sum is σ = 76255632. Its totient is φ = 67564800.

The previous prime is 71903357. The next prime is 71903401. The reversal of 71903387 is 78330917.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71903387 - 2¹⁸ = 71641243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71903387.

It is not an unprimeable number, because it can be changed into a prime (71903327) 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 in 7 ways as a sum of consecutive naturals, for example, 8687 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (9531954).

Almost surely, 2^71903387 is an apocalyptic number.

71903387 is a deficient number, since it is larger than the sum of its proper divisors (4352245).

71903387 is a wasteful number, since it uses less digits than its factorization.

71903387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 71903387 is about 8479.5864875594. The cubic root of 71903387 is about 415.8306043393.

The spelling of 71903387 in words is "seventy-one million, nine hundred three thousand, three hundred eighty-seven".