71430000 has 100 divisors (see below), whose sum is σ = 230682408. Its totient is φ = 19040000.

The previous prime is 71429999. The next prime is 71430001. The reversal of 71430000 is 3417.

It is an interprime number because it is at equal distance from previous prime (71429999) and next prime (71430001).

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 (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71430001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28810 + ... + 31190.

Almost surely, 2^71430000 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 71430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115341204).

71430000 is an abundant number, since it is smaller than the sum of its proper divisors (159252408).

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

71430000 is a wasteful number, since it uses less digits than its factorization.

71430000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 71430000 is about 8451.6270622881. The cubic root of 71430000 is about 414.9160327531.

Adding to 71430000 its reverse (3417), we get a palindrome (71433417).

The spelling of 71430000 in words is "seventy-one million, four hundred thirty thousand".