71330000 has 100 divisors (see below), whose sum is σ = 197561760. Its totient is φ = 24432000.

The previous prime is 71329987. The next prime is 71330003. The reversal of 71330000 is 3317.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71330003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69491 + ... + 70509.

Almost surely, 2^71330000 is an apocalyptic number.

71330000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98780880).

71330000 is an abundant number, since it is smaller than the sum of its proper divisors (126231760).

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

71330000 is a wasteful number, since it uses less digits than its factorization.

71330000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 71330000 is about 8445.7089696484. The cubic root of 71330000 is about 414.7223187174.

Adding to 71330000 its reverse (3317), we get a palindrome (71333317).

The spelling of 71330000 in words is "seventy-one million, three hundred thirty thousand".