1578428 has 12 divisors (see below), whose sum is σ = 2790312. Its totient is φ = 781200.

The previous prime is 1578407. The next prime is 1578439. The reversal of 1578428 is 8248751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (232526).

2^1578428 is an apocalyptic number.

It is an amenable number.

1578428 is a deficient number, since it is larger than the sum of its proper divisors (1211884).

1578428 is a wasteful number, since it uses less digits than its factorization.

1578428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012 (or 4010 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 1578428 is about 1256.3550453594. The cubic root of 1578428 is about 116.4326884335.

The spelling of 1578428 in words is "one million, five hundred seventy-eight thousand, four hundred twenty-eight".