1928550 has 96 divisors (see below), whose sum is σ = 5499648. Its totient is φ = 443520.

The previous prime is 1928543. The next prime is 1928561. The reversal of 1928550 is 558291.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 44829 + ... + 44871.

It is an arithmetic number, because the mean of its divisors is an integer number (57288).

2^1928550 is an apocalyptic number.

1928550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2749824).

1928550 is an abundant number, since it is smaller than the sum of its proper divisors (3571098).

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

1928550 is a wasteful number, since it uses less digits than its factorization.

1928550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1928550 is about 1388.7224344699. The cubic root of 1928550 is about 124.4735189885.

The spelling of 1928550 in words is "one million, nine hundred twenty-eight thousand, five hundred fifty".