20820602 has 8 divisors (see below), whose sum is σ = 34070112. Its totient is φ = 9463900.

The previous prime is 20820587. The next prime is 20820607. The reversal of 20820602 is 20602802.

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

It is not an unprimeable number, because it can be changed into a prime (20820607) 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, 473174 + ... + 473217.

It is an arithmetic number, because the mean of its divisors is an integer number (4258764).

Almost surely, 2^20820602 is an apocalyptic number.

20820602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20820602 is a deficient number, since it is larger than the sum of its proper divisors (13249510).

20820602 is a wasteful number, since it uses less digits than its factorization.

20820602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946404.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20820602 is about 4562.9597850518. The cubic root of 20820602 is about 275.1045420712.

The spelling of 20820602 in words is "twenty million, eight hundred twenty thousand, six hundred two".