2921634 has 36 divisors (see below), whose sum is σ = 6589986. Its totient is φ = 935424.

The previous prime is 2921629. The next prime is 2921647. The reversal of 2921634 is 4361292.

2921634 is a `hidden beast` number, since 2 + 9 + 21 + 634 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2241009 + 680625 = 1497^2 + 825^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2921598 and 2921607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15042 + ... + 15234.

2^2921634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3294993).

2921634 is an abundant number, since it is smaller than the sum of its proper divisors (3668352).

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

2921634 is a wasteful number, since it uses less digits than its factorization.

2921634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 227 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2921634 is about 1709.2787952818. The cubic root of 2921634 is about 142.9580459513.

The spelling of 2921634 in words is "two million, nine hundred twenty-one thousand, six hundred thirty-four".