1604930 has 16 divisors (see below), whose sum is σ = 3041280. Its totient is φ = 608112.

The previous prime is 1604929. The next prime is 1604951. The reversal of 1604930 is 394061.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1604896 and 1604905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034 + ... + 4413.

It is an arithmetic number, because the mean of its divisors is an integer number (190080).

2^1604930 is an apocalyptic number.

1604930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1604930 is a deficient number, since it is larger than the sum of its proper divisors (1436350).

1604930 is a wasteful number, since it uses less digits than its factorization.

1604930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1604930 is about 1266.8583188344. The cubic root of 1604930 is about 117.0807147528.

Adding to 1604930 its reverse (394061), we get a palindrome (1998991).

The spelling of 1604930 in words is "one million, six hundred four thousand, nine hundred thirty".