2798121 has 8 divisors (see below), whose sum is σ = 3786784. Its totient is φ = 1837440.

The previous prime is 2798119. The next prime is 2798129. The reversal of 2798121 is 1218972.

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

It is not a de Polignac number, because 2798121 - 2¹ = 2798119 is a prime.

It is a super-2 number, since 2×2798121² = 15658962261282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2798129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6760 + ... + 7161.

It is an arithmetic number, because the mean of its divisors is an integer number (473348).

2^2798121 is an apocalyptic number.

It is an amenable number.

2798121 is a deficient number, since it is larger than the sum of its proper divisors (988663).

2798121 is a wasteful number, since it uses less digits than its factorization.

2798121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991.

The product of its digits is 2016, while the sum is 30.

The square root of 2798121 is about 1672.7585002026. The cubic root of 2798121 is about 140.9144393139.

The spelling of 2798121 in words is "two million, seven hundred ninety-eight thousand, one hundred twenty-one".