71948305 has 32 divisors (see below), whose sum is σ = 103638528. Its totient is φ = 47251200.

The previous prime is 71948299. The next prime is 71948309. The reversal of 71948305 is 50384917.

It is not a de Polignac number, because 71948305 - 2⁹ = 71947793 is a prime.

It is a super-3 number, since 3×71948305³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71948309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32535 + ... + 34675.

It is an arithmetic number, because the mean of its divisors is an integer number (3238704).

Almost surely, 2^71948305 is an apocalyptic number.

It is an amenable number.

71948305 is a deficient number, since it is larger than the sum of its proper divisors (31690223).

71948305 is a wasteful number, since it uses less digits than its factorization.

71948305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71948305 is about 8482.2346701798. The cubic root of 71948305 is about 415.9171760192.

The spelling of 71948305 in words is "seventy-one million, nine hundred forty-eight thousand, three hundred five".