1604255228 has 6 divisors (see below), whose sum is σ = 2807446656. Its totient is φ = 802127612.

The previous prime is 1604255207. The next prime is 1604255243. The reversal of 1604255228 is 8225524061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200531900 + ... + 200531907.

It is an arithmetic number, because the mean of its divisors is an integer number (467907776).

Almost surely, 2^1604255228 is an apocalyptic number.

It is an amenable number.

1604255228 is a deficient number, since it is larger than the sum of its proper divisors (1203191428).

1604255228 is a wasteful number, since it uses less digits than its factorization.

1604255228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401063811 (or 401063809 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 1604255228 is about 40053.1550317825. The cubic root of 1604255228 is about 1170.6430409680.

Adding to 1604255228 its reverse (8225524061), we get a palindrome (9829779289).

The spelling of 1604255228 in words is "one billion, six hundred four million, two hundred fifty-five thousand, two hundred twenty-eight".