240445820 has 12 divisors (see below), whose sum is σ = 504936264. Its totient is φ = 96178320.

The previous prime is 240445811. The next prime is 240445847. The reversal of 240445820 is 28544042.

It is a congruent number.

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, 6011126 + ... + 6011165.

It is an arithmetic number, because the mean of its divisors is an integer number (42078022).

Almost surely, 2^240445820 is an apocalyptic number.

240445820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240445820 is an abundant number, since it is smaller than the sum of its proper divisors (264490444).

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

240445820 is a wasteful number, since it uses less digits than its factorization.

240445820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12022300 (or 12022298 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 240445820 is about 15506.3154875683. The cubic root of 240445820 is about 621.8310593937.

Adding to 240445820 its reverse (28544042), we get a palindrome (268989862).

The spelling of 240445820 in words is "two hundred forty million, four hundred forty-five thousand, eight hundred twenty".