1450728240 has 160 divisors (see below), whose sum is σ = 4858189056. Its totient is φ = 355998720.

The previous prime is 1450728221. The next prime is 1450728247. The reversal of 1450728240 is 428270541.

It is a super-2 number, since 2×1450728240² = 4209224852666995200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1450728247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1531447 + ... + 1532393.

Almost surely, 2^1450728240 is an apocalyptic number.

1450728240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1450728240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2429094528).

1450728240 is an abundant number, since it is smaller than the sum of its proper divisors (3407460816).

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

1450728240 is a wasteful number, since it uses less digits than its factorization.

1450728240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 1450728240 is about 38088.4265886634. The cubic root of 1450728240 is about 1132.0406491498.

Adding to 1450728240 its reverse (428270541), we get a palindrome (1878998781).

The spelling of 1450728240 in words is "one billion, four hundred fifty million, seven hundred twenty-eight thousand, two hundred forty".