2420891 has 8 divisors (see below), whose sum is σ = 2732400. Its totient is φ = 2124640.

The previous prime is 2420879. The next prime is 2420897. The reversal of 2420891 is 1980242.

2420891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2420891 - 2⁶ = 2420827 is a prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2420891.

It is not an unprimeable number, because it can be changed into a prime (2420897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3476 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (341550).

2^2420891 is an apocalyptic number.

2420891 is a deficient number, since it is larger than the sum of its proper divisors (311509).

2420891 is a wasteful number, since it uses less digits than its factorization.

2420891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2420891 is about 1555.9212705018. The cubic root of 2420891 is about 134.2739439230.

The spelling of 2420891 in words is "two million, four hundred twenty thousand, eight hundred ninety-one".