71143700 has 18 divisors (see below), whose sum is σ = 154382046. Its totient is φ = 28457440.

The previous prime is 71143673. The next prime is 71143703. The reversal of 71143700 is 734117.

It can be written as a sum of positive squares in 3 ways, for example, as 9709456 + 61434244 = 3116^2 + 7838^2 .

It is a super-2 number, since 2×71143700² = 10122852099380000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71143703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355619 + ... + 355818.

Almost surely, 2^71143700 is an apocalyptic number.

It is an amenable number.

71143700 is an abundant number, since it is smaller than the sum of its proper divisors (83238346).

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

71143700 is a wasteful number, since it uses less digits than its factorization.

71143700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711451 (or 711444 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 71143700 is about 8434.6724891960. The cubic root of 71143700 is about 414.3609460793.

Adding to 71143700 its reverse (734117), we get a palindrome (71877817).

The spelling of 71143700 in words is "seventy-one million, one hundred forty-three thousand, seven hundred".