2787898 has 16 divisors (see below), whose sum is σ = 4463424. Its totient is φ = 1301440.

The previous prime is 2787859. The next prime is 2787907. The reversal of 2787898 is 8987872.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5433 + ... + 5923.

It is an arithmetic number, because the mean of its divisors is an integer number (278964).

2^2787898 is an apocalyptic number.

2787898 is a deficient number, since it is larger than the sum of its proper divisors (1675526).

2787898 is a wasteful number, since it uses less digits than its factorization.

2787898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its digits is 451584, while the sum is 49.

The square root of 2787898 is about 1669.6999730491. The cubic root of 2787898 is about 140.7426185020.

The spelling of 2787898 in words is "two million, seven hundred eighty-seven thousand, eight hundred ninety-eight".