20624316 has 12 divisors (see below), whose sum is σ = 48123432. Its totient is φ = 6874768.

The previous prime is 20624311. The next prime is 20624321. The reversal of 20624316 is 61342602.

It is an interprime number because it is at equal distance from previous prime (20624311) and next prime (20624321).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624311) 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, 859335 + ... + 859358.

It is an arithmetic number, because the mean of its divisors is an integer number (4010286).

Almost surely, 2^20624316 is an apocalyptic number.

It is an amenable number.

20624316 is an abundant number, since it is smaller than the sum of its proper divisors (27499116).

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

20624316 is a wasteful number, since it uses less digits than its factorization.

20624316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718700 (or 1718698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20624316 is about 4541.4002246003. The cubic root of 20624316 is about 274.2372959860.

Adding to 20624316 its reverse (61342602), we get a palindrome (81966918).

The spelling of 20624316 in words is "twenty million, six hundred twenty-four thousand, three hundred sixteen".