71063020 has 24 divisors (see below), whose sum is σ = 170551584. Its totient is φ = 24364416.

The previous prime is 71063011. The next prime is 71063033. The reversal of 71063020 is 2036017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253657 + ... + 253936.

It is an arithmetic number, because the mean of its divisors is an integer number (7106316).

Almost surely, 2^71063020 is an apocalyptic number.

71063020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71063020 is an abundant number, since it is smaller than the sum of its proper divisors (99488564).

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

71063020 is a wasteful number, since it uses less digits than its factorization.

71063020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507609 (or 507607 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 71063020 is about 8429.8884927382. Note that the first 3 decimals coincide. The cubic root of 71063020 is about 414.2042524843.

Adding to 71063020 its reverse (2036017), we get a palindrome (73099037).

The spelling of 71063020 in words is "seventy-one million, sixty-three thousand, twenty".