71444430 has 48 divisors (see below), whose sum is σ = 192641904. Its totient is φ = 19051200.

The previous prime is 71444423. The next prime is 71444453. The reversal of 71444430 is 3444417.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71444394 and 71444403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12271 + ... + 17130.

It is an arithmetic number, because the mean of its divisors is an integer number (4013373).

Almost surely, 2^71444430 is an apocalyptic number.

71444430 is an abundant number, since it is smaller than the sum of its proper divisors (121197474).

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

71444430 is a wasteful number, since it uses less digits than its factorization.

71444430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423 (or 29411 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 71444430 is about 8452.4807009540. The cubic root of 71444430 is about 414.9439707588.

Adding to 71444430 its reverse (3444417), we get a palindrome (74888847).

The spelling of 71444430 in words is "seventy-one million, four hundred forty-four thousand, four hundred thirty".