3640426000 has 40 divisors (see below), whose sum is σ = 8802554904. Its totient is φ = 1456169600.

The previous prime is 3640425983. The next prime is 3640426003. The reversal of 3640426000 is 6240463.

It can be written as a sum of positive squares in 4 ways, for example, as 862714384 + 2777711616 = 29372^2 + 52704^2 .

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

It is a super-2 number, since 2×3640426000² = 26505402922952000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (3640426003) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 908107 + ... + 912106.

Almost surely, 2^3640426000 is an apocalyptic number.

It is an amenable number.

3640426000 is an abundant number, since it is smaller than the sum of its proper divisors (5162128904).

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

3640426000 is a wasteful number, since it uses less digits than its factorization.

3640426000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820236 (or 1820220 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 3640426000 is about 60335.9428533275. The cubic root of 3640426000 is about 1538.3343434586.

Adding to 3640426000 its reverse (6240463), we get a palindrome (3646666463).

The spelling of 3640426000 in words is "three billion, six hundred forty million, four hundred twenty-six thousand".