2905434 has 24 divisors (see below), whose sum is σ = 7194720. Its totient is φ = 830088.

The previous prime is 2905433. The next prime is 2905439. The reversal of 2905434 is 4345092.

2905434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2905398 and 2905407.

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

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 11 ways as a sum of consecutive naturals, for example, 11404 + ... + 11655.

It is an arithmetic number, because the mean of its divisors is an integer number (299780).

2^2905434 is an apocalyptic number.

2905434 is an abundant number, since it is smaller than the sum of its proper divisors (4289286).

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

2905434 is a wasteful number, since it uses less digits than its factorization.

2905434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23074 (or 23071 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2905434 is about 1704.5333672299. The cubic root of 2905434 is about 142.6933294661.

The spelling of 2905434 in words is "two million, nine hundred five thousand, four hundred thirty-four".