1604250 has 96 divisors (see below), whose sum is σ = 4672512. Its totient is φ = 396000.

The previous prime is 1604243. The next prime is 1604263. The reversal of 1604250 is 524061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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 47 ways as a sum of consecutive naturals, for example, 51735 + ... + 51765.

It is an arithmetic number, because the mean of its divisors is an integer number (48672).

2^1604250 is an apocalyptic number.

1604250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336256).

1604250 is an abundant number, since it is smaller than the sum of its proper divisors (3068262).

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

1604250 is a wasteful number, since it uses less digits than its factorization.

1604250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1604250 is about 1266.5899099551. The cubic root of 1604250 is about 117.0641769323.

The spelling of 1604250 in words is "one million, six hundred four thousand, two hundred fifty".