2428981 has 4 divisors (see below), whose sum is σ = 2463264. Its totient is φ = 2394700.

The previous prime is 2428931. The next prime is 2428991. The reversal of 2428981 is 1898242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1898242 = 2 ⋅949121.

It is a cyclic number.

It is not a de Polignac number, because 2428981 - 2¹¹ = 2426933 is a prime.

It is a super-2 number, since 2×2428981² = 11799897396722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2428901) 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, 17035 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (615816).

2^2428981 is an apocalyptic number.

It is an amenable number.

2428981 is a deficient number, since it is larger than the sum of its proper divisors (34283).

2428981 is an equidigital number, since it uses as much as digits as its factorization.

2428981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34282.

The product of its digits is 9216, while the sum is 34.

The square root of 2428981 is about 1558.5188481376. The cubic root of 2428981 is about 134.4233473765.

The spelling of 2428981 in words is "two million, four hundred twenty-eight thousand, nine hundred eighty-one".