1440943428 has 24 divisors (see below), whose sum is σ = 3376275840. Its totient is φ = 478303840.

The previous prime is 1440943421. The next prime is 1440943433. The reversal of 1440943428 is 8243490441.

It is not an unprimeable number, because it can be changed into a prime (1440943421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248343 + ... + 254078.

It is an arithmetic number, because the mean of its divisors is an integer number (140678160).

Almost surely, 2^1440943428 is an apocalyptic number.

It is an amenable number.

1440943428 is an abundant number, since it is smaller than the sum of its proper divisors (1935332412).

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

1440943428 is a wasteful number, since it uses less digits than its factorization.

1440943428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502667 (or 502665 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 1440943428 is about 37959.7606420272. The cubic root of 1440943428 is about 1129.4897918589.

The spelling of 1440943428 in words is "one billion, four hundred forty million, nine hundred forty-three thousand, four hundred twenty-eight".