71322790 has 32 divisors (see below), whose sum is σ = 160061184. Its totient is φ = 22230240.

The previous prime is 71322787. The next prime is 71322809. The reversal of 71322790 is 9722317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45544 + ... + 47083.

It is an arithmetic number, because the mean of its divisors is an integer number (5001912).

Almost surely, 2^71322790 is an apocalyptic number.

71322790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71322790 is an abundant number, since it is smaller than the sum of its proper divisors (88738394).

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

71322790 is a wasteful number, since it uses less digits than its factorization.

71322790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92652.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 71322790 is about 8445.2821148852. The cubic root of 71322790 is about 414.7083449398.

It can be divided in two parts, 713227 and 90, that added together give a palindrome (713317).

The spelling of 71322790 in words is "seventy-one million, three hundred twenty-two thousand, seven hundred ninety".