1920578 has 8 divisors (see below), whose sum is σ = 3142800. Its totient is φ = 872980.

The previous prime is 1920571. The next prime is 1920587. The reversal of 1920578 is 8750291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1920571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43628 + ... + 43671.

It is an arithmetic number, because the mean of its divisors is an integer number (392850).

2^1920578 is an apocalyptic number.

1920578 is a deficient number, since it is larger than the sum of its proper divisors (1222222).

1920578 is a wasteful number, since it uses less digits than its factorization.

1920578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87312.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1920578 is about 1385.8491981453. The cubic root of 1920578 is about 124.3017710729.

The spelling of 1920578 in words is "one million, nine hundred twenty thousand, five hundred seventy-eight".