1922677728 has 144 divisors (see below), whose sum is σ = 5334290640. Its totient is φ = 605624320.

The previous prime is 1922677649. The next prime is 1922677777. The reversal of 1922677728 is 8277762291.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14034076 + ... + 14034212.

It is an arithmetic number, because the mean of its divisors is an integer number (37043685).

Almost surely, 2^1922677728 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 1922677728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667145320).

1922677728 is an abundant number, since it is smaller than the sum of its proper divisors (3411612912).

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

1922677728 is a wasteful number, since it uses less digits than its factorization.

1922677728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 242 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 51.

The square root of 1922677728 is about 43848.3492049587. The cubic root of 1922677728 is about 1243.4705342217.

The spelling of 1922677728 in words is "one billion, nine hundred twenty-two million, six hundred seventy-seven thousand, seven hundred twenty-eight".