240247312 has 20 divisors (see below), whose sum is σ = 470712060. Its totient is φ = 118773248.

The previous prime is 240247309. The next prime is 240247333. The reversal of 240247312 is 213742042.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72182016 + 168065296 = 8496^2 + 12964^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82933 + ... + 85780.

It is an arithmetic number, because the mean of its divisors is an integer number (23535603).

Almost surely, 2^240247312 is an apocalyptic number.

It is an amenable number.

240247312 is a deficient number, since it is larger than the sum of its proper divisors (230464748).

240247312 is a wasteful number, since it uses less digits than its factorization.

240247312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168810 (or 168804 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 240247312 is about 15499.9132900800. The cubic root of 240247312 is about 621.6598878798.

Adding to 240247312 its product of nonzero digits (2688), we get a square (240250000 = 15500²).

Adding to 240247312 its reverse (213742042), we get a palindrome (453989354).

The spelling of 240247312 in words is "two hundred forty million, two hundred forty-seven thousand, three hundred twelve".