2428394781 has 8 divisors (see below), whose sum is σ = 3316832064. Its totient is φ = 1579443680.

The previous prime is 2428394743. The next prime is 2428394783. The reversal of 2428394781 is 1874938242.

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

It is a cyclic number.

It is not a de Polignac number, because 2428394781 - 2⁷ = 2428394653 is a prime.

It is a super-2 number, since 2×2428394781² = 11794202424776075922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2428394781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2428394783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9871401 + ... + 9871646.

It is an arithmetic number, because the mean of its divisors is an integer number (414604008).

Almost surely, 2^2428394781 is an apocalyptic number.

It is an amenable number.

2428394781 is a deficient number, since it is larger than the sum of its proper divisors (888437283).

2428394781 is a wasteful number, since it uses less digits than its factorization.

2428394781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19743091.

The product of its digits is 774144, while the sum is 48.

The square root of 2428394781 is about 49278.7457328208. The cubic root of 2428394781 is about 1344.1253243528.

The spelling of 2428394781 in words is "two billion, four hundred twenty-eight million, three hundred ninety-four thousand, seven hundred eighty-one".