1333540240 has 20 divisors (see below), whose sum is σ = 3100481244. Its totient is φ = 533416064.

The previous prime is 1333540217. The next prime is 1333540267. The reversal of 1333540240 is 420453331.

It can be written as a sum of positive squares in 2 ways, for example, as 547747216 + 785793024 = 23404^2 + 28032^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 8334547 + ... + 8334706.

Almost surely, 2^1333540240 is an apocalyptic number.

1333540240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1333540240 is an abundant number, since it is smaller than the sum of its proper divisors (1766941004).

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

1333540240 is a wasteful number, since it uses less digits than its factorization.

1333540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16669266 (or 16669260 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1333540240 is about 36517.6702433219. The cubic root of 1333540240 is about 1100.6993459169.

Adding to 1333540240 its reverse (420453331), we get a palindrome (1753993571).

The spelling of 1333540240 in words is "one billion, three hundred thirty-three million, five hundred forty thousand, two hundred forty".