1920285 has 24 divisors (see below), whose sum is σ = 3363360. Its totient is φ = 1013472.

The previous prime is 1920283. The next prime is 1920299. The reversal of 1920285 is 5820291.

It is not a de Polignac number, because 1920285 - 2¹ = 1920283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6102 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (140140).

2^1920285 is an apocalyptic number.

1920285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1920285 is a deficient number, since it is larger than the sum of its proper divisors (1443075).

1920285 is a wasteful number, since it uses less digits than its factorization.

1920285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1920285 is about 1385.7434827557. The cubic root of 1920285 is about 124.2954496649.

The spelling of 1920285 in words is "one million, nine hundred twenty thousand, two hundred eighty-five".