1928673280 has 192 divisors, whose sum is σ = 5094835200. Its totient is φ = 697466880.

The previous prime is 1928673221. The next prime is 1928673287. The reversal of 1928673280 is 823768291.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 1928673280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928673287) 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 15 ways as a sum of consecutive naturals, for example, 4474665 + ... + 4475095.

It is an arithmetic number, because the mean of its divisors is an integer number (26535600).

Almost surely, 2^1928673280 is an apocalyptic number.

1928673280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928673280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2547417600).

1928673280 is an abundant number, since it is smaller than the sum of its proper divisors (3166161920).

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

1928673280 is a wasteful number, since it uses less digits than its factorization.

1928673280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 1928673280 is about 43916.6628969005. The cubic root of 1928673280 is about 1244.7617120016.

The spelling of 1928673280 in words is "one billion, nine hundred twenty-eight million, six hundred seventy-three thousand, two hundred eighty".