71204020 has 24 divisors (see below), whose sum is σ = 157399200. Its totient is φ = 26982432.

The previous prime is 71204009. The next prime is 71204051. The reversal of 71204020 is 2040217.

It is a junction number, because it is equal to n+sod(n) for n = 71203985 and 71204003.

It is a congruent number.

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, 93310 + ... + 94069.

It is an arithmetic number, because the mean of its divisors is an integer number (6558300).

Almost surely, 2^71204020 is an apocalyptic number.

It is an amenable number.

71204020 is an abundant number, since it is smaller than the sum of its proper divisors (86195180).

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

71204020 is a wasteful number, since it uses less digits than its factorization.

71204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187407 (or 187405 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 71204020 is about 8438.2474483746. The cubic root of 71204020 is about 414.4780198877.

Adding to 71204020 its reverse (2040217), we get a palindrome (73244237).

The spelling of 71204020 in words is "seventy-one million, two hundred four thousand, twenty".