1920255 has 16 divisors (see below), whose sum is σ = 3089760. Its totient is φ = 1018368.

The previous prime is 1920239. The next prime is 1920257. The reversal of 1920255 is 5520291.

It is not a de Polignac number, because 1920255 - 2⁴ = 1920239 is a prime.

1920255 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4491 + ... + 4899.

It is an arithmetic number, because the mean of its divisors is an integer number (193110).

2^1920255 is an apocalyptic number.

1920255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1920255 is a deficient number, since it is larger than the sum of its proper divisors (1169505).

1920255 is a wasteful number, since it uses less digits than its factorization.

1920255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1920255 is about 1385.7326581993. The cubic root of 1920255 is about 124.2948023855.

The spelling of 1920255 in words is "one million, nine hundred twenty thousand, two hundred fifty-five".