1604402030 has 192 divisors, whose sum is σ = 4033317888. Its totient is φ = 444026880.

The previous prime is 1604402027. The next prime is 1604402071. The reversal of 1604402030 is 302044061.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1604401993 and 1604402011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21978074 + ... + 21978146.

It is an arithmetic number, because the mean of its divisors is an integer number (21006864).

Almost surely, 2^1604402030 is an apocalyptic number.

1604402030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1604402030 is an abundant number, since it is smaller than the sum of its proper divisors (2428915858).

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

1604402030 is a wasteful number, since it uses less digits than its factorization.

1604402030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1604402030 is about 40054.9875795762. The cubic root of 1604402030 is about 1170.6787475677.

Adding to 1604402030 its reverse (302044061), we get a palindrome (1906446091).

The spelling of 1604402030 in words is "one billion, six hundred four million, four hundred two thousand, thirty".