2905438 has 8 divisors (see below), whose sum is σ = 4370688. Its totient is φ = 1448544.

The previous prime is 2905433. The next prime is 2905439. The reversal of 2905438 is 8345092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131 + ... + 2662.

It is an arithmetic number, because the mean of its divisors is an integer number (546336).

2^2905438 is an apocalyptic number.

2905438 is a deficient number, since it is larger than the sum of its proper divisors (1465250).

2905438 is a wasteful number, since it uses less digits than its factorization.

2905438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2905438 is about 1704.5345405711. The cubic root of 2905438 is about 142.6933949495.

It can be divided in two parts, 29054 and 38, that added together give a palindrome (29092).

The spelling of 2905438 in words is "two million, nine hundred five thousand, four hundred thirty-eight".