2404638 has 24 divisors (see below), whose sum is σ = 5264688. Its totient is φ = 793152.

The previous prime is 2404631. The next prime is 2404643. The reversal of 2404638 is 8364042.

2404638 is a `hidden beast` number, since 24 + 0 + 4 + 638 = 666.

It is a super-2 number, since 2×2404638² = 11564567822088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2404631) 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, 1206 + ... + 2502.

It is an arithmetic number, because the mean of its divisors is an integer number (219362).

2^2404638 is an apocalyptic number.

2404638 is an abundant number, since it is smaller than the sum of its proper divisors (2860050).

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

2404638 is a wasteful number, since it uses less digits than its factorization.

2404638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408 (or 1405 counting only the distinct ones).

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

The square root of 2404638 is about 1550.6895240505. The cubic root of 2404638 is about 133.9727797981.

It can be divided in two parts, 240463 and 8, that added together give a triangular number (240471 = T₆₉₃).

The spelling of 2404638 in words is "two million, four hundred four thousand, six hundred thirty-eight".