71903830 has 16 divisors (see below), whose sum is σ = 131251104. Its totient is φ = 28356160.

The previous prime is 71903827. The next prime is 71903833. The reversal of 71903830 is 3830917.

It is an interprime number because it is at equal distance from previous prime (71903827) and next prime (71903833).

It is a junction number, because it is equal to n+sod(n) for n = 71903792 and 71903801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71903833) 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, 49927 + ... + 51346.

It is an arithmetic number, because the mean of its divisors is an integer number (8203194).

Almost surely, 2^71903830 is an apocalyptic number.

71903830 is a deficient number, since it is larger than the sum of its proper divisors (59347274).

71903830 is a wasteful number, since it uses less digits than its factorization.

71903830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101351.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 71903830 is about 8479.6126090760. The cubic root of 71903830 is about 415.8314583213.

The spelling of 71903830 in words is "seventy-one million, nine hundred three thousand, eight hundred thirty".