71430012 has 60 divisors (see below), whose sum is σ = 188481216. Its totient is φ = 23587200.

The previous prime is 71430001. The next prime is 71430013. The reversal of 71430012 is 21003417.

It is a super-2 number, since 2×71430012² = 10204493228640288, which contains 22 as substring.

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 (71430013) 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, 35637 + ... + 37587.

Almost surely, 2^71430012 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 71430012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94240608).

71430012 is an abundant number, since it is smaller than the sum of its proper divisors (117051204).

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

71430012 is a wasteful number, since it uses less digits than its factorization.

71430012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 71430012 is about 8451.6277722105. The cubic root of 71430012 is about 414.9160559880.

Adding to 71430012 its reverse (21003417), we get a palindrome (92433429).

The spelling of 71430012 in words is "seventy-one million, four hundred thirty thousand, twelve".