2863421 has 8 divisors (see below), whose sum is σ = 3144864. Its totient is φ = 2585520.

The previous prime is 2863403. The next prime is 2863423. The reversal of 2863421 is 1243682.

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 2863421 - 2¹⁰ = 2862397 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863423) 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 7 ways as a sum of consecutive naturals, for example, 995 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (393108).

2^2863421 is an apocalyptic number.

2863421 is the 905-th centered heptagonal number.

It is an amenable number.

2863421 is a deficient number, since it is larger than the sum of its proper divisors (281443).

2863421 is a wasteful number, since it uses less digits than its factorization.

2863421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its digits is 2304, while the sum is 26.

The square root of 2863421 is about 1692.1645901035. The cubic root of 2863421 is about 142.0021986038.

The spelling of 2863421 in words is "two million, eight hundred sixty-three thousand, four hundred twenty-one".