20453360 has 20 divisors (see below), whose sum is σ = 47554248. Its totient is φ = 8181312.

The previous prime is 20453327. The next prime is 20453401. The reversal of 20453360 is 6335402.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127754 + ... + 127913.

Almost surely, 2^20453360 is an apocalyptic number.

20453360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20453360 is an abundant number, since it is smaller than the sum of its proper divisors (27100888).

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

20453360 is a wasteful number, since it uses less digits than its factorization.

20453360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255680 (or 255674 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20453360 is about 4522.5391098364. The cubic root of 20453360 is about 273.4774704127.

Adding to 20453360 its reverse (6335402), we get a palindrome (26788762).

The spelling of 20453360 in words is "twenty million, four hundred fifty-three thousand, three hundred sixty".