1605354428 has 12 divisors (see below), whose sum is σ = 2815861440. Its totient is φ = 800822592.

The previous prime is 1605354397. The next prime is 1605354463. The reversal of 1605354428 is 8244535061.

It is a junction number, because it is equal to n+sod(n) for n = 1605354391 and 1605354400.

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, 461708 + ... + 465171.

It is an arithmetic number, because the mean of its divisors is an integer number (234655120).

Almost surely, 2^1605354428 is an apocalyptic number.

It is an amenable number.

1605354428 is a deficient number, since it is larger than the sum of its proper divisors (1210507012).

1605354428 is a wasteful number, since it uses less digits than its factorization.

1605354428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927316 (or 927314 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 1605354428 is about 40066.8744476032. The cubic root of 1605354428 is about 1170.9103461181.

Adding to 1605354428 its reverse (8244535061), we get a palindrome (9849889489).

The spelling of 1605354428 in words is "one billion, six hundred five million, three hundred fifty-four thousand, four hundred twenty-eight".