240145644 has 24 divisors (see below), whose sum is σ = 562751280. Its totient is φ = 79704064.

The previous prime is 240145603. The next prime is 240145657. The reversal of 240145644 is 446541042.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40149 + ... + 45740.

It is an arithmetic number, because the mean of its divisors is an integer number (23447970).

Almost surely, 2^240145644 is an apocalyptic number.

It is an amenable number.

240145644 is an abundant number, since it is smaller than the sum of its proper divisors (322605636).

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

240145644 is a wasteful number, since it uses less digits than its factorization.

240145644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86129 (or 86127 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 240145644 is about 15496.6333117874. The cubic root of 240145644 is about 621.5721840404.

Adding to 240145644 its reverse (446541042), we get a palindrome (686686686).

The spelling of 240145644 in words is "two hundred forty million, one hundred forty-five thousand, six hundred forty-four".