82739320 has 32 divisors (see below), whose sum is σ = 192585600. Its totient is φ = 31954048.

The previous prime is 82739287. The next prime is 82739329. The reversal of 82739320 is 2393728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82739329) 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, 34504 + ... + 36823.

It is an arithmetic number, because the mean of its divisors is an integer number (6018300).

Almost surely, 2^82739320 is an apocalyptic number.

It is an amenable number.

82739320 is an abundant number, since it is smaller than the sum of its proper divisors (109846280).

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

82739320 is a wasteful number, since it uses less digits than its factorization.

82739320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71367 (or 71363 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 82739320 is about 9096.1156544978. The cubic root of 82739320 is about 435.7499197127.

The spelling of 82739320 in words is "eighty-two million, seven hundred thirty-nine thousand, three hundred twenty".