71473480 has 96 divisors (see below), whose sum is σ = 177546600. Its totient is φ = 25878528.

The previous prime is 71473471. The next prime is 71473481. The reversal of 71473480 is 8437417.

It can be written as a sum of positive squares in 12 ways, for example, as 3364 + 71470116 = 58^2 + 8454^2 .

It is not an unprimeable number, because it can be changed into a prime (71473481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 655666 + ... + 655774.

Almost surely, 2^71473480 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 71473480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88773300).

71473480 is an abundant number, since it is smaller than the sum of its proper divisors (106073120).

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

71473480 is a wasteful number, since it uses less digits than its factorization.

71473480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 71473480 is about 8454.1989567315. The cubic root of 71473480 is about 415.0002032224. Note that the first 3 decimals are identical.

The spelling of 71473480 in words is "seventy-one million, four hundred seventy-three thousand, four hundred eighty".