71208816 has 40 divisors (see below), whose sum is σ = 210236544. Its totient is φ = 20345280.

The previous prime is 71208793. The next prime is 71208877. The reversal of 71208816 is 61880217.

It is a happy number.

It is a super-2 number, since 2×71208816² = 10141390952243712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105630 + ... + 106301.

Almost surely, 2^71208816 is an apocalyptic number.

It is an amenable number.

71208816 is an abundant number, since it is smaller than the sum of its proper divisors (139027728).

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

71208816 is a wasteful number, since it uses less digits than its factorization.

71208816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211949 (or 211943 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 71208816 is about 8438.5316258221. The cubic root of 71208816 is about 414.4873255044.

The spelling of 71208816 in words is "seventy-one million, two hundred eight thousand, eight hundred sixteen".