71417280 has 112 divisors (see below), whose sum is σ = 247400064. Its totient is φ = 17310720.

The previous prime is 71417279. The next prime is 71417303. The reversal of 71417280 is 8271417.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7179 + ... + 13941.

Almost surely, 2^71417280 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 71417280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123700032).

71417280 is an abundant number, since it is smaller than the sum of its proper divisors (175982784).

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

71417280 is a wasteful number, since it uses less digits than its factorization.

71417280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794 (or 6784 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 71417280 is about 8450.8745109604. The cubic root of 71417280 is about 414.8914023679.

Adding to 71417280 its reverse (8271417), we get a palindrome (79688697).

The spelling of 71417280 in words is "seventy-one million, four hundred seventeen thousand, two hundred eighty".