2428861 has 4 divisors (see below), whose sum is σ = 2432224. Its totient is φ = 2425500.

The previous prime is 2428859. The next prime is 2428879. The reversal of 2428861 is 1688242.

2428861 is nontrivially palindromic in base 6.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1688242 = 2 ⋅844121.

It is a cyclic number.

It is not a de Polignac number, because 2428861 - 2¹ = 2428859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2428891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (608056).

2^2428861 is an apocalyptic number.

It is an amenable number.

2428861 is a deficient number, since it is larger than the sum of its proper divisors (3363).

2428861 is a wasteful number, since it uses less digits than its factorization.

2428861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its digits is 6144, while the sum is 31.

The square root of 2428861 is about 1558.4803495713. The cubic root of 2428861 is about 134.4211336818.

The spelling of 2428861 in words is "two million, four hundred twenty-eight thousand, eight hundred sixty-one".