34826821 has 4 divisors (see below), whose sum is σ = 34839052. Its totient is φ = 34814592.

The previous prime is 34826819. The next prime is 34826833. The reversal of 34826821 is 12862843.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5244100 + 29582721 = 2290^2 + 5439^2 .

It is a cyclic number.

It is not a de Polignac number, because 34826821 - 2¹ = 34826819 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 (34826021) 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 3 ways as a sum of consecutive naturals, for example, 655 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (8709763).

Almost surely, 2^34826821 is an apocalyptic number.

It is an amenable number.

34826821 is a deficient number, since it is larger than the sum of its proper divisors (12231).

34826821 is an equidigital number, since it uses as much as digits as its factorization.

34826821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230.

The product of its digits is 18432, while the sum is 34.

The square root of 34826821 is about 5901.4253363065. The cubic root of 34826821 is about 326.5662339919.

The spelling of 34826821 in words is "thirty-four million, eight hundred twenty-six thousand, eight hundred twenty-one".