1440020432 has 40 divisors (see below), whose sum is σ = 3005283840. Its totient is φ = 666483840.

The previous prime is 1440020419. The next prime is 1440020437. The reversal of 1440020432 is 2340200441.

It is a super-3 number, since 3×1440020432³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440020437) 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, 51707 + ... + 74522.

It is an arithmetic number, because the mean of its divisors is an integer number (75132096).

Almost surely, 2^1440020432 is an apocalyptic number.

It is an amenable number.

1440020432 is an abundant number, since it is smaller than the sum of its proper divisors (1565263408).

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

1440020432 is a wasteful number, since it uses less digits than its factorization.

1440020432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126291 (or 126285 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1440020432 is about 37947.6011363037. The cubic root of 1440020432 is about 1129.2485755342.

Adding to 1440020432 its reverse (2340200441), we get a palindrome (3780220873).

Subtracting 1440020432 from its reverse (2340200441), we obtain a square (900180009 = 30003²).

The spelling of 1440020432 in words is "one billion, four hundred forty million, twenty thousand, four hundred thirty-two".