1928292820 has 12 divisors (see below), whose sum is σ = 4049414964. Its totient is φ = 771317120.

The previous prime is 1928292809. The next prime is 1928292823. The reversal of 1928292820 is 282928291.

It can be written as a sum of positive squares in 2 ways, for example, as 1337511184 + 590781636 = 36572^2 + 24306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928292823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48207301 + ... + 48207340.

It is an arithmetic number, because the mean of its divisors is an integer number (337451247).

Almost surely, 2^1928292820 is an apocalyptic number.

1928292820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1928292820 is an abundant number, since it is smaller than the sum of its proper divisors (2121122144).

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

1928292820 is a wasteful number, since it uses less digits than its factorization.

1928292820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96414650 (or 96414648 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 1928292820 is about 43912.3310699853. The cubic root of 1928292820 is about 1244.6798572555.

The spelling of 1928292820 in words is "one billion, nine hundred twenty-eight million, two hundred ninety-two thousand, eight hundred twenty".