2644938 has 12 divisors (see below), whose sum is σ = 5730738. Its totient is φ = 881640.

The previous prime is 2644927. The next prime is 2644981. The reversal of 2644938 is 8394462.

It is a happy number.

2644938 is a `hidden beast` number, since 2 + 644 + 9 + 3 + 8 = 666.

2644938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2350089 + 294849 = 1533^2 + 543^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 4⁴ + 4⁷ + 9² + 3⁸ + 8⁷ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73453 + ... + 73488.

2^2644938 is an apocalyptic number.

2644938 is an abundant number, since it is smaller than the sum of its proper divisors (3085800).

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

2644938 is a wasteful number, since it uses less digits than its factorization.

2644938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146949 (or 146946 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2644938 is about 1626.3265354780. The cubic root of 2644938 is about 138.2945818134.

The spelling of 2644938 in words is "two million, six hundred forty-four thousand, nine hundred thirty-eight".