22821434 has 8 divisors (see below), whose sum is σ = 35412660. Its totient is φ = 11017216.

The previous prime is 22821419. The next prime is 22821493. The reversal of 22821434 is 43412822.

It can be written as a sum of positive squares in 2 ways, for example, as 20675209 + 2146225 = 4547^2 + 1465^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 196679 + ... + 196794.

Almost surely, 2^22821434 is an apocalyptic number.

22821434 is a deficient number, since it is larger than the sum of its proper divisors (12591226).

22821434 is a wasteful number, since it uses less digits than its factorization.

22821434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393504.

The product of its digits is 3072, while the sum is 26.

The square root of 22821434 is about 4777.1784559508. The cubic root of 22821434 is about 283.6488170610.

The spelling of 22821434 in words is "twenty-two million, eight hundred twenty-one thousand, four hundred thirty-four".