1604268 has 18 divisors (see below), whose sum is σ = 4055324. Its totient is φ = 534744.

The previous prime is 1604263. The next prime is 1604279. The reversal of 1604268 is 8624061.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1604263) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 22246 + ... + 22317.

2^1604268 is an apocalyptic number.

1604268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1604268 is an abundant number, since it is smaller than the sum of its proper divisors (2451056).

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

1604268 is a wasteful number, since it uses less digits than its factorization.

1604268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44573 (or 44568 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1604268 is about 1266.5970156289. The cubic root of 1604268 is about 117.0646147584.

It can be divided in two parts, 16042 and 68, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 1604268 in words is "one million, six hundred four thousand, two hundred sixty-eight".