34284821 has 4 divisors (see below), whose sum is σ = 34304172. Its totient is φ = 34265472.

The previous prime is 34284787. The next prime is 34284823. The reversal of 34284821 is 12848243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 29920900 = 2089^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 34284821 - 2²² = 30090517 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 (34284823) 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, 6716 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (8576043).

Almost surely, 2^34284821 is an apocalyptic number.

It is an amenable number.

34284821 is a deficient number, since it is larger than the sum of its proper divisors (19351).

34284821 is a wasteful number, since it uses less digits than its factorization.

34284821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350.

The product of its digits is 12288, while the sum is 32.

The square root of 34284821 is about 5855.3241584049. The cubic root of 34284821 is about 324.8632829295.

It can be divided in two parts, 3 and 4284821, that added together give a palindrome (4284824).

The spelling of 34284821 in words is "thirty-four million, two hundred eighty-four thousand, eight hundred twenty-one".