2004021630 has 48 divisors (see below), whose sum is σ = 5611263840. Its totient is φ = 493297344.

The previous prime is 2004021619. The next prime is 2004021641. The reversal of 2004021630 is 361204002.

It is a happy number.

2004021630 is a `hidden beast` number, since 200 + 402 + 1 + 63 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2004021619) and next prime (2004021641).

It is a super-2 number, since 2×2004021630² = 8032205387015713800, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855250 + ... + 857589.

It is an arithmetic number, because the mean of its divisors is an integer number (116901330).

Almost surely, 2^2004021630 is an apocalyptic number.

2004021630 is an abundant number, since it is smaller than the sum of its proper divisors (3607242210).

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

2004021630 is a wasteful number, since it uses less digits than its factorization.

2004021630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712865 (or 1712862 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2004021630 is about 44766.3001598301. The cubic root of 2004021630 is about 1260.7649738710.

Adding to 2004021630 its reverse (361204002), we get a palindrome (2365225632).

The spelling of 2004021630 in words is "two billion, four million, twenty-one thousand, six hundred thirty".