71538460 has 24 divisors (see below), whose sum is σ = 171692640. Its totient is φ = 24527424.

The previous prime is 71538451. The next prime is 71538461. The reversal of 71538460 is 6483517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71538461) 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, 255355 + ... + 255634.

It is an arithmetic number, because the mean of its divisors is an integer number (7153860).

Almost surely, 2^71538460 is an apocalyptic number.

71538460 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71538460 is an abundant number, since it is smaller than the sum of its proper divisors (100154180).

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

71538460 is a wasteful number, since it uses less digits than its factorization.

71538460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511005 (or 511003 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 71538460 is about 8458.0411443785. The cubic root of 71538460 is about 415.1259307188.

The spelling of 71538460 in words is "seventy-one million, five hundred thirty-eight thousand, four hundred sixty".