240220128 has 24 divisors (see below), whose sum is σ = 630578088. Its totient is φ = 80073344.

The previous prime is 240220121. The next prime is 240220129. The reversal of 240220128 is 821022042.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240220121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251051 + ... + 1251242.

It is an arithmetic number, because the mean of its divisors is an integer number (26274087).

Almost surely, 2^240220128 is an apocalyptic number.

It is an amenable number.

240220128 is an abundant number, since it is smaller than the sum of its proper divisors (390357960).

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

240220128 is a wasteful number, since it uses less digits than its factorization.

240220128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502306 (or 2502298 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 240220128 is about 15499.0363571417. The cubic root of 240220128 is about 621.6364400423.

The spelling of 240220128 in words is "two hundred forty million, two hundred twenty thousand, one hundred twenty-eight".