2051634 has 32 divisors (see below), whose sum is σ = 4576320. Its totient is φ = 608832.

The previous prime is 2051629. The next prime is 2051641. The reversal of 2051634 is 4361502.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2051634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (143010).

2^2051634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288160).

2051634 is an abundant number, since it is smaller than the sum of its proper divisors (2524686).

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

2051634 is a wasteful number, since it uses less digits than its factorization.

2051634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2051634 is about 1432.3526102186. The cubic root of 2051634 is about 127.0671519545.

The spelling of 2051634 in words is "two million, fifty-one thousand, six hundred thirty-four".