240006881 has 4 divisors (see below), whose sum is σ = 240156564. Its totient is φ = 239857200.

The previous prime is 240006869. The next prime is 240006913. The reversal of 240006881 is 188600042.

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 112678225 + 127328656 = 10615^2 + 11284^2 .

It is a cyclic number.

It is not a de Polignac number, because 240006881 - 2²⁶ = 172898017 is a prime.

It is a super-2 number, since 2×240006881² = 115206605854696322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240006821) 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, 72410 + ... + 75651.

It is an arithmetic number, because the mean of its divisors is an integer number (60039141).

Almost surely, 2^240006881 is an apocalyptic number.

It is an amenable number.

240006881 is a deficient number, since it is larger than the sum of its proper divisors (149683).

240006881 is a wasteful number, since it uses less digits than its factorization.

240006881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149682.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 240006881 is about 15492.1554665579. The cubic root of 240006881 is about 621.4524402637.

The spelling of 240006881 in words is "two hundred forty million, six thousand, eight hundred eighty-one".