71906480 has 40 divisors (see below), whose sum is σ = 167895504. Its totient is φ = 28640000.

The previous prime is 71906473. The next prime is 71906489. The reversal of 71906480 is 8460917.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×71906480³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71906480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71906489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18290 + ... + 21870.

Almost surely, 2^71906480 is an apocalyptic number.

It is an amenable number.

71906480 is an abundant number, since it is smaller than the sum of its proper divisors (95989024).

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

71906480 is a wasteful number, since it uses less digits than its factorization.

71906480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845 (or 3839 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 71906480 is about 8479.7688647746. The cubic root of 71906480 is about 415.8365667178.

The spelling of 71906480 in words is "seventy-one million, nine hundred six thousand, four hundred eighty".