71930784 has 24 divisors (see below), whose sum is σ = 188818560. Its totient is φ = 23976896.

The previous prime is 71930783. The next prime is 71930801. The reversal of 71930784 is 48703917.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (71930783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374544 + ... + 374735.

It is an arithmetic number, because the mean of its divisors is an integer number (7867440).

Almost surely, 2^71930784 is an apocalyptic number.

It is an amenable number.

71930784 is an abundant number, since it is smaller than the sum of its proper divisors (116887776).

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

71930784 is a wasteful number, since it uses less digits than its factorization.

71930784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749292 (or 749284 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 71930784 is about 8481.2018016317. The cubic root of 71930784 is about 415.8834116080.

The spelling of 71930784 in words is "seventy-one million, nine hundred thirty thousand, seven hundred eighty-four".