126004644 has 36 divisors (see below), whose sum is σ = 326284140. Its totient is φ = 40976640.

The previous prime is 126004639. The next prime is 126004651. The reversal of 126004644 is 446400621.

126004644 is a `hidden beast` number, since 12 + 6 + 0 + 0 + 4 + 644 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2528100 + 123476544 = 1590^2 + 11112^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41209 + ... + 44160.

Almost surely, 2^126004644 is an apocalyptic number.

It is an amenable number.

126004644 is an abundant number, since it is smaller than the sum of its proper divisors (200279496).

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

126004644 is a wasteful number, since it uses less digits than its factorization.

126004644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85420 (or 85415 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 126004644 is about 11225.1790186170. The cubic root of 126004644 is about 501.3359526154.

The spelling of 126004644 in words is "one hundred twenty-six million, four thousand, six hundred forty-four".