2051924 has 54 divisors (see below), whose sum is σ = 4560570. Its totient is φ = 804384.

The previous prime is 2051923. The next prime is 2051947. The reversal of 2051924 is 4291502.

It can be written as a sum of positive squares in only one way, i.e., 1768900 + 283024 = 1330^2 + 532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2051924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70742 + ... + 70770.

It is an arithmetic number, because the mean of its divisors is an integer number (84455).

2^2051924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2280285).

2051924 is an abundant number, since it is smaller than the sum of its proper divisors (2508646).

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

2051924 is a wasteful number, since it uses less digits than its factorization.

2051924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2051924 is about 1432.4538386978. The cubic root of 2051924 is about 127.0731386847.

The spelling of 2051924 in words is "two million, fifty-one thousand, nine hundred twenty-four".