240857420 has 48 divisors (see below), whose sum is σ = 522849600. Its totient is φ = 93129984.

The previous prime is 240857413. The next prime is 240857423. The reversal of 240857420 is 24758042.

240857420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (240857423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122606 + ... + 124554.

It is an arithmetic number, because the mean of its divisors is an integer number (10892700).

Almost surely, 2^240857420 is an apocalyptic number.

240857420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240857420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261424800).

240857420 is an abundant number, since it is smaller than the sum of its proper divisors (281992180).

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

240857420 is a wasteful number, since it uses less digits than its factorization.

240857420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 240857420 is about 15519.5818242632. The cubic root of 240857420 is about 622.1856781022.

The spelling of 240857420 in words is "two hundred forty million, eight hundred fifty-seven thousand, four hundred twenty".