71290296 has 216 divisors, whose sum is σ = 248353560. Its totient is φ = 18406080.

The previous prime is 71290253. The next prime is 71290301. The reversal of 71290296 is 69209217.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 71290296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 426805 + ... + 426971.

It is an arithmetic number, because the mean of its divisors is an integer number (1149785).

Almost surely, 2^71290296 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 71290296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124176780).

71290296 is an abundant number, since it is smaller than the sum of its proper divisors (177063264).

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

71290296 is a wasteful number, since it uses less digits than its factorization.

71290296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 71290296 is about 8443.3580997136. The cubic root of 71290296 is about 414.6453562844.

The spelling of 71290296 in words is "seventy-one million, two hundred ninety thousand, two hundred ninety-six".