2706240021 has 8 divisors (see below), whose sum is σ = 3608567424. Its totient is φ = 1804036320.

The previous prime is 2706240011. The next prime is 2706240071. The reversal of 2706240021 is 1200426072.

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

It is not a de Polignac number, because 2706240021 - 2¹⁵ = 2706207253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2706239973 and 2706240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2706240011) 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, 51540 + ... + 89826.

It is an arithmetic number, because the mean of its divisors is an integer number (451070928).

Almost surely, 2^2706240021 is an apocalyptic number.

It is an amenable number.

2706240021 is a deficient number, since it is larger than the sum of its proper divisors (902327403).

2706240021 is a wasteful number, since it uses less digits than its factorization.

2706240021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61851.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2706240021 is about 52021.5342045965. The cubic root of 2706240021 is about 1393.5485511067.

Adding to 2706240021 its reverse (1200426072), we get a palindrome (3906666093).

The spelling of 2706240021 in words is "two billion, seven hundred six million, two hundred forty thousand, twenty-one".