2909634 has 48 divisors (see below), whose sum is σ = 7261632. Its totient is φ = 756864.

The previous prime is 2909633. The next prime is 2909659. The reversal of 2909634 is 4369092.

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 = 2909595 and 2909604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39822 + ... + 39894.

It is an arithmetic number, because the mean of its divisors is an integer number (151284).

2^2909634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2909634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3630816).

2909634 is an abundant number, since it is smaller than the sum of its proper divisors (4351998).

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

2909634 is a wasteful number, since it uses less digits than its factorization.

2909634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 2909634 is about 1705.7649310500. The cubic root of 2909634 is about 142.7620539588.

The spelling of 2909634 in words is "two million, nine hundred nine thousand, six hundred thirty-four".