440428 has 12 divisors (see below), whose sum is σ = 778960. Its totient is φ = 217872.

The previous prime is 440399. The next prime is 440431. The reversal of 440428 is 824044.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 440399 and 440408.

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, 123 + ... + 946.

2⁴⁴⁰⁴²⁸ is an apocalyptic number.

It is an amenable number.

440428 is a deficient number, since it is larger than the sum of its proper divisors (338532).

440428 is a wasteful number, since it uses less digits than its factorization.

440428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 440428 is about 663.6474967933. The cubic root of 440428 is about 76.0837027937.

It can be divided in two parts, 440 and 428, that added together give a palindrome (868).

The spelling of 440428 in words is "four hundred forty thousand, four hundred twenty-eight".