20346648 has 64 divisors (see below), whose sum is σ = 58475520. Its totient is φ = 5779200.

The previous prime is 20346643. The next prime is 20346659. The reversal of 20346648 is 84664302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346643) 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 15 ways as a sum of consecutive naturals, for example, 46993 + ... + 47423.

It is an arithmetic number, because the mean of its divisors is an integer number (913680).

Almost surely, 2^20346648 is an apocalyptic number.

20346648 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 20346648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29237760).

20346648 is an abundant number, since it is smaller than the sum of its proper divisors (38128872).

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

20346648 is a wasteful number, since it uses less digits than its factorization.

20346648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 20346648 is about 4510.7258839349. The cubic root of 20346648 is about 273.0010331510.

The spelling of 20346648 in words is "twenty million, three hundred forty-six thousand, six hundred forty-eight".