3200643904 has 14 divisors (see below), whose sum is σ = 6351277874. Its totient is φ = 1600321920.

The previous prime is 3200643883. The next prime is 3200643937. The reversal of 3200643904 is 4093460023.

It can be written as a sum of positive squares in only one way, i.e., 1603842304 + 1596801600 = 40048^2 + 39960^2 .

It is a super-2 number, since 2×3200643904² = 20488242800424722432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25004967 + ... + 25005094.

Almost surely, 2^3200643904 is an apocalyptic number.

It is an amenable number.

3200643904 is a deficient number, since it is larger than the sum of its proper divisors (3150633970).

3200643904 is an equidigital number, since it uses as much as digits as its factorization.

3200643904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50010073 (or 50010063 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 3200643904 is about 56574.2335697091. The cubic root of 3200643904 is about 1473.7114329364.

The spelling of 3200643904 in words is "three billion, two hundred million, six hundred forty-three thousand, nine hundred four".