240730920 has 128 divisors (see below), whose sum is σ = 808790400. Its totient is φ = 63687168.

The previous prime is 240730909. The next prime is 240730921. The reversal of 240730920 is 29037042.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (240730921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147147 + ... + 148773.

It is an arithmetic number, because the mean of its divisors is an integer number (6318675).

Almost surely, 2^240730920 is an apocalyptic number.

240730920 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 240730920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404395200).

240730920 is an abundant number, since it is smaller than the sum of its proper divisors (568059480).

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

240730920 is a wasteful number, since it uses less digits than its factorization.

240730920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1774 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 240730920 is about 15515.5057925934. The cubic root of 240730920 is about 622.0767336053.

Adding to 240730920 its reverse (29037042), we get a palindrome (269767962).

The spelling of 240730920 in words is "two hundred forty million, seven hundred thirty thousand, nine hundred twenty".