2638242 has 24 divisors (see below), whose sum is σ = 5775744. Its totient is φ = 870264.

The previous prime is 2638231. The next prime is 2638243. The reversal of 2638242 is 2428362.

2638242 is a `hidden beast` number, since 2 + 638 + 24 + 2 = 666.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1143 + ... + 2565.

It is an arithmetic number, because the mean of its divisors is an integer number (240656).

2^2638242 is an apocalyptic number.

2638242 is an abundant number, since it is smaller than the sum of its proper divisors (3137502).

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

2638242 is a wasteful number, since it uses less digits than its factorization.

2638242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1531 counting only the distinct ones).

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

The square root of 2638242 is about 1624.2666037323. The cubic root of 2638242 is about 138.1777796971.

The spelling of 2638242 in words is "two million, six hundred thirty-eight thousand, two hundred forty-two".