1239653328 has 160 divisors (see below), whose sum is σ = 3667443840. Its totient is φ = 358318080.

The previous prime is 1239653299. The next prime is 1239653353. The reversal of 1239653328 is 8233569321.

1239653328 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1239653328.

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, 572568 + ... + 574728.

It is an arithmetic number, because the mean of its divisors is an integer number (22921524).

Almost surely, 2^1239653328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1239653328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1833721920).

1239653328 is an abundant number, since it is smaller than the sum of its proper divisors (2427790512).

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

1239653328 is a wasteful number, since it uses less digits than its factorization.

1239653328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2239 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 1239653328 is about 35208.7109676000. The cubic root of 1239653328 is about 1074.2369426839.

The spelling of 1239653328 in words is "one billion, two hundred thirty-nine million, six hundred fifty-three thousand, three hundred twenty-eight".