71290492 has 60 divisors (see below), whose sum is σ = 157012856. Its totient is φ = 28153440.

The previous prime is 71290487. The next prime is 71290519. The reversal of 71290492 is 29409217.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124567 + ... + 125137.

Almost surely, 2^71290492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71290492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78506428).

71290492 is an abundant number, since it is smaller than the sum of its proper divisors (85722364).

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

71290492 is a wasteful number, since it uses less digits than its factorization.

71290492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 71290492 is about 8443.3697064620. The cubic root of 71290492 is about 414.6457362820.

It can be divided in two parts, 712 and 90492, that added together give a square (91204 = 302²).

The spelling of 71290492 in words is "seventy-one million, two hundred ninety thousand, four hundred ninety-two".