71266290 has 32 divisors (see below), whose sum is σ = 173105856. Its totient is φ = 18774720.

The previous prime is 71266289. The next prime is 71266297. The reversal of 71266290 is 9266217.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71266297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11821 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (5409558).

Almost surely, 2^71266290 is an apocalyptic number.

71266290 is an abundant number, since it is smaller than the sum of its proper divisors (101839566).

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

71266290 is a wasteful number, since it uses less digits than its factorization.

71266290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28714.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 71266290 is about 8441.9363892415. The cubic root of 71266290 is about 414.5988090708.

The spelling of 71266290 in words is "seventy-one million, two hundred sixty-six thousand, two hundred ninety".