71280001 has 8 divisors (see below), whose sum is σ = 80803520. Its totient is φ = 62333712.

The previous prime is 71279993. The next prime is 71280007. The reversal of 71280001 is 10008217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71280001 - 2³ = 71279993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71280007) 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 7 ways as a sum of consecutive naturals, for example, 144045 + ... + 144538.

It is an arithmetic number, because the mean of its divisors is an integer number (10100440).

Almost surely, 2^71280001 is an apocalyptic number.

It is an amenable number.

71280001 is a deficient number, since it is larger than the sum of its proper divisors (9523519).

71280001 is a wasteful number, since it uses less digits than its factorization.

71280001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288615.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 71280001 is about 8442.7484269046. The cubic root of 71280001 is about 414.6253957396.

Adding to 71280001 its reverse (10008217), we get a palindrome (81288218).

The spelling of 71280001 in words is "seventy-one million, two hundred eighty thousand, one".