2628894987 has 16 divisors (see below), whose sum is σ = 3898853280. Its totient is φ = 1750709376.

The previous prime is 2628894937. The next prime is 2628894997. The reversal of 2628894987 is 7894988262.

2628894987 is a `hidden beast` number, since 2 + 62 + 8 + 89 + 498 + 7 = 666.

It is not a de Polignac number, because 2628894987 - 2⁸ = 2628894731 is a prime.

It is a super-2 number, since 2×2628894987² = 13822177705347460338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2628894937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26658 + ... + 77255.

It is an arithmetic number, because the mean of its divisors is an integer number (243678330).

Almost surely, 2^2628894987 is an apocalyptic number.

2628894987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2628894987 is a deficient number, since it is larger than the sum of its proper divisors (1269958293).

2628894987 is a wasteful number, since it uses less digits than its factorization.

2628894987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104859 (or 104853 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 2628894987 is about 51272.7509209327. The cubic root of 2628894987 is about 1380.1440350606.

The spelling of 2628894987 in words is "two billion, six hundred twenty-eight million, eight hundred ninety-four thousand, nine hundred eighty-seven".