1440000128 has 32 divisors (see below), whose sum is σ = 3278573760. Its totient is φ = 617142528.

The previous prime is 1440000119. The next prime is 1440000131. The reversal of 1440000128 is 8210000441.

It is a tau number, because it is divible by the number of its divisors (32).

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, 802676 + ... + 804467.

It is an arithmetic number, because the mean of its divisors is an integer number (102455430).

Almost surely, 2^1440000128 is an apocalyptic number.

It is an amenable number.

1440000128 is an abundant number, since it is smaller than the sum of its proper divisors (1838573632).

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

1440000128 is an equidigital number, since it uses as much as digits as its factorization.

1440000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607164 (or 1607152 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1440000128 is about 37947.3336085686. Note that the first 3 decimals coincide. The cubic root of 1440000128 is about 1129.2432681163.

Adding to 1440000128 its reverse (8210000441), we get a palindrome (9650000569).

The spelling of 1440000128 in words is "one billion, four hundred forty million, one hundred twenty-eight", and thus it is an aban number.