2563938 has 24 divisors (see below), whose sum is σ = 5983068. Its totient is φ = 788832.

The previous prime is 2563937. The next prime is 2563943. The reversal of 2563938 is 8393652.

2563938 is a `hidden beast` number, since 2 + 563 + 93 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2518569 + 45369 = 1587^2 + 213^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 6⁵ + 3⁹ + 9 + 3¹⁰ + 8 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2563933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5245 + ... + 5712.

2^2563938 is an apocalyptic number.

2563938 is an abundant number, since it is smaller than the sum of its proper divisors (3419130).

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

2563938 is a wasteful number, since it uses less digits than its factorization.

2563938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10978 (or 10975 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2563938 is about 1601.2301521018. The cubic root of 2563938 is about 136.8681844358.

The spelling of 2563938 in words is "two million, five hundred sixty-three thousand, nine hundred thirty-eight".