20193648 has 80 divisors (see below), whose sum is σ = 55329792. Its totient is φ = 6336000.

The previous prime is 20193647. The next prime is 20193653. The reversal of 20193648 is 84639102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20193647) 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, 60843 + ... + 61173.

Almost surely, 2^20193648 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 20193648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27664896).

20193648 is an abundant number, since it is smaller than the sum of its proper divisors (35136144).

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

20193648 is a wasteful number, since it uses less digits than its factorization.

20193648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20193648 is about 4493.7343045623. The cubic root of 20193648 is about 272.3150185248.

The spelling of 20193648 in words is "twenty million, one hundred ninety-three thousand, six hundred forty-eight".