71077872 has 40 divisors (see below), whose sum is σ = 184738176. Its totient is φ = 23548096.

The previous prime is 71077861. The next prime is 71077873. The reversal of 71077872 is 27877017.

It is a self number, because there is not a number n which added to its sum of digits gives 71077872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71077873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3583 + ... + 12449.

Almost surely, 2^71077872 is an apocalyptic number.

It is an amenable number.

71077872 is an abundant number, since it is smaller than the sum of its proper divisors (113660304).

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

71077872 is a wasteful number, since it uses less digits than its factorization.

71077872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045 (or 9039 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 71077872 is about 8430.7693599102. The cubic root of 71077872 is about 414.2331063712.

The spelling of 71077872 in words is "seventy-one million, seventy-seven thousand, eight hundred seventy-two".