240217540 has 12 divisors (see below), whose sum is σ = 504456876. Its totient is φ = 96087008.

The previous prime is 240217519. The next prime is 240217541. The reversal of 240217540 is 45712042.

240217540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41576704 + 198640836 = 6448^2 + 14094^2 .

It is not an unprimeable number, because it can be changed into a prime (240217541) 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, 6005419 + ... + 6005458.

It is an arithmetic number, because the mean of its divisors is an integer number (42038073).

Almost surely, 2^240217540 is an apocalyptic number.

240217540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240217540 is an abundant number, since it is smaller than the sum of its proper divisors (264239336).

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

240217540 is a wasteful number, since it uses less digits than its factorization.

240217540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12010886 (or 12010884 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 240217540 is about 15498.9528678553. The cubic root of 240217540 is about 621.6342076441.

Adding to 240217540 its reverse (45712042), we get a palindrome (285929582).

The spelling of 240217540 in words is "two hundred forty million, two hundred seventeen thousand, five hundred forty".