240673638 has 16 divisors (see below), whose sum is σ = 481533696. Its totient is φ = 80193480.

The previous prime is 240673637. The next prime is 240673661. The reversal of 240673638 is 836376042.

240673638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 240673596 and 240673605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240673637) 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, 13495 + ... + 25757.

It is an arithmetic number, because the mean of its divisors is an integer number (30095856).

Almost surely, 2^240673638 is an apocalyptic number.

240673638 is an abundant number, since it is smaller than the sum of its proper divisors (240860058).

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

240673638 is a wasteful number, since it uses less digits than its factorization.

240673638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15539.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 240673638 is about 15513.6597229667. The cubic root of 240673638 is about 622.0273885714.

The spelling of 240673638 in words is "two hundred forty million, six hundred seventy-three thousand, six hundred thirty-eight".