1705397328 has 60 divisors (see below), whose sum is σ = 4949523488. Its totient is φ = 568464480.

The previous prime is 1705397321. The next prime is 1705397333. The reversal of 1705397328 is 8237935071.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1705397321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215428 + ... + 223203.

Almost surely, 2^1705397328 is an apocalyptic number.

1705397328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1705397328 is an abundant number, since it is smaller than the sum of its proper divisors (3244126160).

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

1705397328 is an equidigital number, since it uses as much as digits as its factorization.

1705397328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438654 (or 438636 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1705397328 is about 41296.4566034424. The cubic root of 1705397328 is about 1194.7449203752.

The spelling of 1705397328 in words is "one billion, seven hundred five million, three hundred ninety-seven thousand, three hundred twenty-eight".