2628397874 has 8 divisors (see below), whose sum is σ = 3953894700. Its totient is φ = 1310432976.

The previous prime is 2628397859. The next prime is 2628397909. The reversal of 2628397874 is 4787938262.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2610699025 + 17698849 = 51095^2 + 4207^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1882109 + ... + 1883504.

Almost surely, 2^2628397874 is an apocalyptic number.

2628397874 is a deficient number, since it is larger than the sum of its proper divisors (1325496826).

2628397874 is a wasteful number, since it uses less digits than its factorization.

2628397874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765964.

The product of its digits is 8128512, while the sum is 56.

The square root of 2628397874 is about 51267.9029608195. The cubic root of 2628397874 is about 1380.0570364300.

The spelling of 2628397874 in words is "two billion, six hundred twenty-eight million, three hundred ninety-seven thousand, eight hundred seventy-four".