1922724 has 48 divisors (see below), whose sum is σ = 5252800. Its totient is φ = 606528.

The previous prime is 1922719. The next prime is 1922749. The reversal of 1922724 is 4272291.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1584 + ... + 2520.

2^1922724 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 1922724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2626400).

1922724 is an abundant number, since it is smaller than the sum of its proper divisors (3330076).

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

1922724 is a wasteful number, since it uses less digits than its factorization.

1922724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969 (or 961 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1922724 is about 1386.6232364994. The cubic root of 1922724 is about 124.3480509443.

It can be divided in two parts, 192 and 2724, that added together give a square (2916 = 54²).

The spelling of 1922724 in words is "one million, nine hundred twenty-two thousand, seven hundred twenty-four".