71370000 has 300 divisors, whose sum is σ = 273196924. Its totient is φ = 17280000.

The previous prime is 71369993. The next prime is 71370001. The reversal of 71370000 is 7317.

It can be written as a sum of positive squares in 10 ways, for example, as 71368704 + 1296 = 8448^2 + 36^2 .

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71370001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1169970 + ... + 1170030.

Almost surely, 2^71370000 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 71370000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136598462).

71370000 is an abundant number, since it is smaller than the sum of its proper divisors (201826924).

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

71370000 is a wasteful number, since it uses less digits than its factorization.

71370000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 147, while the sum is 18.

The square root of 71370000 is about 8448.0767041972. The cubic root of 71370000 is about 414.7998260441.

Adding to 71370000 its reverse (7317), we get a palindrome (71377317).

The spelling of 71370000 in words is "seventy-one million, three hundred seventy thousand".