1440347228 has 6 divisors (see below), whose sum is σ = 2520607656. Its totient is φ = 720173612.

The previous prime is 1440347177. The next prime is 1440347267. The reversal of 1440347228 is 8227430441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180043400 + ... + 180043407.

It is an arithmetic number, because the mean of its divisors is an integer number (420101276).

Almost surely, 2^1440347228 is an apocalyptic number.

It is an amenable number.

1440347228 is a deficient number, since it is larger than the sum of its proper divisors (1080260428).

1440347228 is a wasteful number, since it uses less digits than its factorization.

1440347228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360086811 (or 360086809 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 1440347228 is about 37951.9067768670. The cubic root of 1440347228 is about 1129.3339923790. Note that the first 3 decimals are identical.

Adding to 1440347228 its reverse (8227430441), we get a palindrome (9667777669).

The spelling of 1440347228 in words is "one billion, four hundred forty million, three hundred forty-seven thousand, two hundred twenty-eight".