2819421 has 24 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 1706760.

The previous prime is 2819413. The next prime is 2819423. The reversal of 2819421 is 1249182.

2819421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2819421 - 2³ = 2819413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2819423) 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 23 ways as a sum of consecutive naturals, for example, 2836 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^2819421 is an apocalyptic number.

It is an amenable number.

2819421 is a deficient number, since it is larger than the sum of its proper divisors (1777059).

2819421 is a wasteful number, since it uses less digits than its factorization.

2819421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 877 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 2819421 is about 1679.1131587835. The cubic root of 2819421 is about 141.2710945601.

It can be divided in two parts, 2819 and 421, that added together give a triangular number (3240 = T₈₀).

The spelling of 2819421 in words is "two million, eight hundred nineteen thousand, four hundred twenty-one".