2780898 has 8 divisors (see below), whose sum is σ = 5561808. Its totient is φ = 926964.

The previous prime is 2780891. The next prime is 2780909. The reversal of 2780898 is 8980872.

It is a happy number.

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

2780898 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2780891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231736 + ... + 231747.

It is an arithmetic number, because the mean of its divisors is an integer number (695226).

2^2780898 is an apocalyptic number.

2780898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2780898 is a wasteful number, since it uses less digits than its factorization.

2780898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463488.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 2780898 is about 1667.6024706146. The cubic root of 2780898 is about 140.6247251353.

The spelling of 2780898 in words is "two million, seven hundred eighty thousand, eight hundred ninety-eight".