71390208 has 88 divisors (see below), whose sum is σ = 201621312. Its totient is φ = 22380544.

The previous prime is 71390203. The next prime is 71390213. The reversal of 71390208 is 80209317.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71390203) and next prime (71390213).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71390203) 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, 51541 + ... + 52907.

Almost surely, 2^71390208 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 71390208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100810656).

71390208 is an abundant number, since it is smaller than the sum of its proper divisors (130231104).

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

71390208 is a wasteful number, since it uses less digits than its factorization.

71390208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 71390208 is about 8449.2726314163. The cubic root of 71390208 is about 414.8389717350.

The spelling of 71390208 in words is "seventy-one million, three hundred ninety thousand, two hundred eight".