240061638 has 16 divisors (see below), whose sum is σ = 482135040. Its totient is φ = 79685256.

The previous prime is 240061631. The next prime is 240061667. The reversal of 240061638 is 836160042.

240061638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240061631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82270 + ... + 85137.

It is an arithmetic number, because the mean of its divisors is an integer number (30133440).

Almost surely, 2^240061638 is an apocalyptic number.

240061638 is an abundant number, since it is smaller than the sum of its proper divisors (242073402).

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

240061638 is a wasteful number, since it uses less digits than its factorization.

240061638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167651.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 240061638 is about 15493.9226150126. The cubic root of 240061638 is about 621.4996976362.

The spelling of 240061638 in words is "two hundred forty million, sixty-one thousand, six hundred thirty-eight".