339721056 has 72 divisors (see below), whose sum is σ = 982505160. Its totient is φ = 111315456.

The previous prime is 339721037. The next prime is 339721069. The reversal of 339721056 is 650127933.

339721056 is a `hidden beast` number, since 3 + 397 + 210 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 339721056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6996 + ... + 26988.

It is an arithmetic number, because the mean of its divisors is an integer number (13645905).

Almost surely, 2^339721056 is an apocalyptic number.

339721056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 339721056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491252580).

339721056 is an abundant number, since it is smaller than the sum of its proper divisors (642784104).

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

339721056 is a wasteful number, since it uses less digits than its factorization.

339721056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20068 (or 20057 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 339721056 is about 18431.5234313390. The cubic root of 339721056 is about 697.7622800578.

Adding to 339721056 its reverse (650127933), we get a palindrome (989848989).

The spelling of 339721056 in words is "three hundred thirty-nine million, seven hundred twenty-one thousand, fifty-six".