240321040 has 20 divisors (see below), whose sum is σ = 558746604. Its totient is φ = 96128384.

The previous prime is 240321019. The next prime is 240321071. The reversal of 240321040 is 40123042.

It can be written as a sum of positive squares in 2 ways, for example, as 25522704 + 214798336 = 5052^2 + 14656^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 1501927 + ... + 1502086.

Almost surely, 2^240321040 is an apocalyptic number.

240321040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240321040 is an abundant number, since it is smaller than the sum of its proper divisors (318425564).

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

240321040 is a wasteful number, since it uses less digits than its factorization.

240321040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004026 (or 3004020 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 240321040 is about 15502.2914435254. The cubic root of 240321040 is about 621.7234738184.

Adding to 240321040 its reverse (40123042), we get a palindrome (280444082).

The spelling of 240321040 in words is "two hundred forty million, three hundred twenty-one thousand, forty".