1394087328 has 192 divisors, whose sum is σ = 4171305600. Its totient is φ = 452874240.

The previous prime is 1394087311. The next prime is 1394087347. The reversal of 1394087328 is 8237804931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10641823 + ... + 10641953.

It is an arithmetic number, because the mean of its divisors is an integer number (21725550).

Almost surely, 2^1394087328 is an apocalyptic number.

1394087328 is a gapful number since it is divisible by the number (18) 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 1394087328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085652800).

1394087328 is an abundant number, since it is smaller than the sum of its proper divisors (2777218272).

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

1394087328 is a wasteful number, since it uses less digits than its factorization.

1394087328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1394087328 is about 37337.4788650760. The cubic root of 1394087328 is about 1117.1118529468. Note that the first 3 decimals are identical.

The spelling of 1394087328 in words is "one billion, three hundred ninety-four million, eighty-seven thousand, three hundred twenty-eight".