440018928 has 30 divisors (see below), whose sum is σ = 1231442264. Its totient is φ = 146672928.

The previous prime is 440018927. The next prime is 440018933. The reversal of 440018928 is 829810044.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 440018892 and 440018901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440018921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1527700 + ... + 1527987.

Almost surely, 2^440018928 is an apocalyptic number.

440018928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

440018928 is an abundant number, since it is smaller than the sum of its proper divisors (791423336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440018928 is a wasteful number, since it uses less digits than its factorization.

440018928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055701 (or 3055692 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 440018928 is about 20976.6281370481. The cubic root of 440018928 is about 760.6013984026.

The spelling of 440018928 in words is "four hundred forty million, eighteen thousand, nine hundred twenty-eight".