20170248 has 128 divisors (see below), whose sum is σ = 62208000. Its totient is φ = 5322240.

The previous prime is 20170247. The next prime is 20170253. The reversal of 20170248 is 84207102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20170247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226588 + ... + 226676.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^20170248 is an apocalyptic number.

20170248 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 20170248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104000).

20170248 is an abundant number, since it is smaller than the sum of its proper divisors (42037752).

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

20170248 is a wasteful number, since it uses less digits than its factorization.

20170248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 20170248 is about 4491.1299246403. The cubic root of 20170248 is about 272.2097934505.

The spelling of 20170248 in words is "twenty million, one hundred seventy thousand, two hundred forty-eight".