71704992 has 48 divisors (see below), whose sum is σ = 188667360. Its totient is φ = 23845632.

The previous prime is 71704991. The next prime is 71705003. The reversal of 71704992 is 29940717.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-4 number, since 4×71704992⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71704992.

It is not an unprimeable number, because it can be changed into a prime (71704991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69859 + ... + 70877.

It is an arithmetic number, because the mean of its divisors is an integer number (3930570).

Almost surely, 2^71704992 is an apocalyptic number.

It is an amenable number.

71704992 is an abundant number, since it is smaller than the sum of its proper divisors (116962368).

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

71704992 is a wasteful number, since it uses less digits than its factorization.

71704992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 71704992 is about 8467.8800180447. The cubic root of 71704992 is about 415.4478003704.

The spelling of 71704992 in words is "seventy-one million, seven hundred four thousand, nine hundred ninety-two".