20623608 has 48 divisors (see below), whose sum is σ = 56398680. Its totient is φ = 6807744.

The previous prime is 20623579. The next prime is 20623609. The reversal of 20623608 is 80632602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623609) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6366 + ... + 9042.

Almost surely, 2^20623608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20623608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28199340).

20623608 is an abundant number, since it is smaller than the sum of its proper divisors (35775072).

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

20623608 is a wasteful number, since it uses less digits than its factorization.

20623608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20623608 is about 4541.3222744042. The cubic root of 20623608 is about 274.2341579065.

The spelling of 20623608 in words is "twenty million, six hundred twenty-three thousand, six hundred eight".