20328246 has 40 divisors (see below), whose sum is σ = 47131920. Its totient is φ = 6540912.

The previous prime is 20328229. The next prime is 20328257. The reversal of 20328246 is 64282302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2535 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (1178298).

Almost surely, 2^20328246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20328246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23565960).

20328246 is an abundant number, since it is smaller than the sum of its proper divisors (26803674).

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

20328246 is a wasteful number, since it uses less digits than its factorization.

20328246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370 (or 4361 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20328246 is about 4508.6856177826. The cubic root of 20328246 is about 272.9187054163.

The spelling of 20328246 in words is "twenty million, three hundred twenty-eight thousand, two hundred forty-six".