240747481 has 8 divisors (see below), whose sum is σ = 259388360. Its totient is φ = 222124032.

The previous prime is 240747469. The next prime is 240747491. The reversal of 240747481 is 184747042.

It can be written as a sum of positive squares in 4 ways, for example, as 1225 + 240746256 = 35^2 + 15516^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240747481 - 2⁹ = 240746969 is a prime.

It is a super-2 number, since 2×240747481² = 115918699215690722, 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 240747481.

It is not an unprimeable number, because it can be changed into a prime (240747401) 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, 45721 + ... + 50713.

It is an arithmetic number, because the mean of its divisors is an integer number (32423545).

Almost surely, 2^240747481 is an apocalyptic number.

It is an amenable number.

240747481 is a deficient number, since it is larger than the sum of its proper divisors (18640879).

240747481 is a wasteful number, since it uses less digits than its factorization.

240747481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715.

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 240747481 is about 15516.0394753300. The cubic root of 240747481 is about 622.0909984624.

The spelling of 240747481 in words is "two hundred forty million, seven hundred forty-seven thousand, four hundred eighty-one".