1239455328 has 24 divisors (see below), whose sum is σ = 3253570488. Its totient is φ = 413151744.

The previous prime is 1239455317. The next prime is 1239455369. The reversal of 1239455328 is 8235549321.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1239455328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455401 + ... + 6455592.

It is an arithmetic number, because the mean of its divisors is an integer number (135565437).

Almost surely, 2^1239455328 is an apocalyptic number.

It is an amenable number.

1239455328 is an abundant number, since it is smaller than the sum of its proper divisors (2014115160).

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

1239455328 is a wasteful number, since it uses less digits than its factorization.

1239455328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911006 (or 12910998 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 1239455328 is about 35205.8990511533. The cubic root of 1239455328 is about 1074.1797465213.

The spelling of 1239455328 in words is "one billion, two hundred thirty-nine million, four hundred fifty-five thousand, three hundred twenty-eight".