71290992 has 40 divisors (see below), whose sum is σ = 185067520. Its totient is φ = 23647680.

The previous prime is 71290991. The next prime is 71290993. The reversal of 71290992 is 29909217.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71290991) and next prime (71290993).

It is a self number, because there is not a number n which added to its sum of digits gives 71290992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71290991) by changing a digit.

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, 6609 + ... + 13647.

It is an arithmetic number, because the mean of its divisors is an integer number (4626688).

Almost surely, 2^71290992 is an apocalyptic number.

It is an amenable number.

71290992 is an abundant number, since it is smaller than the sum of its proper divisors (113776528).

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

71290992 is a wasteful number, since it uses less digits than its factorization.

71290992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261 (or 7255 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 71290992 is about 8443.3993154416. The cubic root of 71290992 is about 414.6467056604.

The spelling of 71290992 in words is "seventy-one million, two hundred ninety thousand, nine hundred ninety-two".