240096781 has 4 divisors (see below), whose sum is σ = 243385852. Its totient is φ = 236807712.

The previous prime is 240096761. The next prime is 240096809. The reversal of 240096781 is 187690042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48024900 + 192071881 = 6930^2 + 13859^2 .

It is a cyclic number.

It is not a de Polignac number, because 240096781 - 2¹⁷ = 239965709 is a prime.

It is a super-2 number, since 2×240096781² = 115292928493123922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240096781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240096761) 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, 1644426 + ... + 1644571.

It is an arithmetic number, because the mean of its divisors is an integer number (60846463).

Almost surely, 2^240096781 is an apocalyptic number.

It is an amenable number.

240096781 is a deficient number, since it is larger than the sum of its proper divisors (3289071).

240096781 is an equidigital number, since it uses as much as digits as its factorization.

240096781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289070.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 240096781 is about 15495.0566633362. The cubic root of 240096781 is about 621.5300235952.

The spelling of 240096781 in words is "two hundred forty million, ninety-six thousand, seven hundred eighty-one".