71320270 has 64 divisors (see below), whose sum is σ = 157666176. Its totient is φ = 22671360.

The previous prime is 71320237. The next prime is 71320283. The reversal of 71320270 is 7202317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86460 + ... + 87280.

It is an arithmetic number, because the mean of its divisors is an integer number (2463534).

Almost surely, 2^71320270 is an apocalyptic number.

71320270 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71320270 is an abundant number, since it is smaller than the sum of its proper divisors (86345906).

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

71320270 is a wasteful number, since it uses less digits than its factorization.

71320270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 71320270 is about 8445.1329178409. The cubic root of 71320270 is about 414.7034606789.

Adding to 71320270 its reverse (7202317), we get a palindrome (78522587).

The spelling of 71320270 in words is "seventy-one million, three hundred twenty thousand, two hundred seventy".