1239352428 has 96 divisors (see below), whose sum is σ = 3182312448. Its totient is φ = 373811200.

The previous prime is 1239352423. The next prime is 1239352453. The reversal of 1239352428 is 8242539321.

It is not an unprimeable number, because it can be changed into a prime (1239352421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592801 + ... + 594887.

It is an arithmetic number, because the mean of its divisors is an integer number (33149088).

Almost surely, 2^1239352428 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 1239352428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591156224).

1239352428 is an abundant number, since it is smaller than the sum of its proper divisors (1942960020).

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

1239352428 is a wasteful number, since it uses less digits than its factorization.

1239352428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 2221 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 1239352428 is about 35204.4376180049. The cubic root of 1239352428 is about 1074.1500194435.

The spelling of 1239352428 in words is "one billion, two hundred thirty-nine million, three hundred fifty-two thousand, four hundred twenty-eight".