20303360 has 160 divisors (see below), whose sum is σ = 61281792. Its totient is φ = 6266880.

The previous prime is 20303351. The next prime is 20303431. The reversal of 20303360 is 6330302.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197069 + ... + 197171.

Almost surely, 2^20303360 is an apocalyptic number.

20303360 is a gapful number since it is divisible by the number (20) 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 20303360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30640896).

20303360 is an abundant number, since it is smaller than the sum of its proper divisors (40978432).

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

20303360 is a wasteful number, since it uses less digits than its factorization.

20303360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 20303360 is about 4505.9249882793. The cubic root of 20303360 is about 272.8072901908.

Adding to 20303360 its reverse (6330302), we get a palindrome (26633662).

The spelling of 20303360 in words is "twenty million, three hundred three thousand, three hundred sixty".