71878266 has 80 divisors (see below), whose sum is σ = 170615808. Its totient is φ = 22572000.

The previous prime is 71878231. The next prime is 71878271. The reversal of 71878266 is 66287817.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 376231 + ... + 376421.

Almost surely, 2^71878266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71878266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85307904).

71878266 is an abundant number, since it is smaller than the sum of its proper divisors (98737542).

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

71878266 is a wasteful number, since it uses less digits than its factorization.

71878266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 320 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 71878266 is about 8478.1050948900. The cubic root of 71878266 is about 415.7821722334.

The spelling of 71878266 in words is "seventy-one million, eight hundred seventy-eight thousand, two hundred sixty-six".