71351830 has 16 divisors (see below), whose sum is σ = 140109264. Its totient is φ = 25946080.

The previous prime is 71351789. The next prime is 71351837. The reversal of 71351830 is 3815317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71351837) 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, 324217 + ... + 324436.

It is an arithmetic number, because the mean of its divisors is an integer number (8756829).

Almost surely, 2^71351830 is an apocalyptic number.

71351830 is a deficient number, since it is larger than the sum of its proper divisors (68757434).

71351830 is a wasteful number, since it uses less digits than its factorization.

71351830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648671.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 71351830 is about 8447.0012430448. The cubic root of 71351830 is about 414.7646219316.

The spelling of 71351830 in words is "seventy-one million, three hundred fifty-one thousand, eight hundred thirty".