20934648 has 96 divisors (see below), whose sum is σ = 65800800. Its totient is φ = 5889024.

The previous prime is 20934611. The next prime is 20934653. The reversal of 20934648 is 84643902.

It is a happy number.

20934648 is a `hidden beast` number, since 2 + 0 + 9 + 3 + 4 + 648 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36508 + ... + 37076.

It is an arithmetic number, because the mean of its divisors is an integer number (685425).

Almost surely, 2^20934648 is an apocalyptic number.

20934648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20934648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32900400).

20934648 is an abundant number, since it is smaller than the sum of its proper divisors (44866152).

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

20934648 is a wasteful number, since it uses less digits than its factorization.

20934648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20934648 is about 4575.4396510062. The cubic root of 20934648 is about 275.6059278456.

The spelling of 20934648 in words is "twenty million, nine hundred thirty-four thousand, six hundred forty-eight".