71127920 has 40 divisors (see below), whose sum is σ = 168899904. Its totient is φ = 27844352.

The previous prime is 71127911. The next prime is 71127941. The reversal of 71127920 is 2972117.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5699 + ... + 13218.

Almost surely, 2^71127920 is an apocalyptic number.

It is an amenable number.

71127920 is an abundant number, since it is smaller than the sum of its proper divisors (97771984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71127920 is a wasteful number, since it uses less digits than its factorization.

71127920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18977 (or 18971 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 71127920 is about 8433.7370127364. The cubic root of 71127920 is about 414.3303080926.

The spelling of 71127920 in words is "seventy-one million, one hundred twenty-seven thousand, nine hundred twenty".