1544428 has 12 divisors (see below), whose sum is σ = 2721712. Its totient is φ = 766800.

The previous prime is 1544423. The next prime is 1544437. The reversal of 1544428 is 8244451.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1544396 and 1544405.

It is not an unprimeable number, because it can be changed into a prime (1544423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675 + ... + 1882.

2^1544428 is an apocalyptic number.

It is an amenable number.

1544428 is a deficient number, since it is larger than the sum of its proper divisors (1177284).

1544428 is a wasteful number, since it uses less digits than its factorization.

1544428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2710 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 1544428 is about 1242.7501760209. The cubic root of 1544428 is about 115.5906099819.

Adding to 1544428 its reverse (8244451), we get a palindrome (9788879).

The spelling of 1544428 in words is "one million, five hundred forty-four thousand, four hundred twenty-eight".