20620254 has 8 divisors (see below), whose sum is σ = 41240520. Its totient is φ = 6873416.

The previous prime is 20620241. The next prime is 20620283. The reversal of 20620254 is 45202602.

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

20620254 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20620254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718349 + ... + 1718360.

It is an arithmetic number, because the mean of its divisors is an integer number (5155065).

Almost surely, 2^20620254 is an apocalyptic number.

20620254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20620254 is a wasteful number, since it uses less digits than its factorization.

20620254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436714.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20620254 is about 4540.9529836808. The cubic root of 20620254 is about 274.2192909438.

Adding to 20620254 its reverse (45202602), we get a palindrome (65822856).

The spelling of 20620254 in words is "twenty million, six hundred twenty thousand, two hundred fifty-four".