20648088 has 64 divisors (see below), whose sum is σ = 57948000. Its totient is φ = 6811776.

The previous prime is 20648083. The next prime is 20648093. The reversal of 20648088 is 88084602.

20648088 is a `hidden beast` number, since 2 + 0 + 648 + 0 + 8 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20648083) and next prime (20648093).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20648083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23106 + ... + 23982.

Almost surely, 2^20648088 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 20648088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28974000).

20648088 is an abundant number, since it is smaller than the sum of its proper divisors (37299912).

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

20648088 is a wasteful number, since it uses less digits than its factorization.

20648088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 20648088 is about 4544.0167253213. The cubic root of 20648088 is about 274.3426193317.

The spelling of 20648088 in words is "twenty million, six hundred forty-eight thousand, eighty-eight".