3640046320 has 40 divisors (see below), whose sum is σ = 8659932336. Its totient is φ = 1422156288.

The previous prime is 3640046261. The next prime is 3640046321. The reversal of 3640046320 is 236400463.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640046321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525637 + ... + 532516.

Almost surely, 2^3640046320 is an apocalyptic number.

It is an amenable number.

3640046320 is an abundant number, since it is smaller than the sum of its proper divisors (5019886016).

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

3640046320 is a wasteful number, since it uses less digits than its factorization.

3640046320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058209 (or 1058203 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 3640046320 is about 60332.7963880343. The cubic root of 3640046320 is about 1538.2808611564.

Adding to 3640046320 its reverse (236400463), we get a palindrome (3876446783).

The spelling of 3640046320 in words is "three billion, six hundred forty million, forty-six thousand, three hundred twenty".