20453160 has 128 divisors (see below), whose sum is σ = 75559680. Its totient is φ = 4313088.

The previous prime is 20453123. The next prime is 20453171. The reversal of 20453160 is 6135402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9984 + ... + 11856.

It is an arithmetic number, because the mean of its divisors is an integer number (590310).

Almost surely, 2^20453160 is an apocalyptic number.

20453160 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 20453160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37779840).

20453160 is an abundant number, since it is smaller than the sum of its proper divisors (55106520).

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

20453160 is a wasteful number, since it uses less digits than its factorization.

20453160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20453160 is about 4522.5169983097. The cubic root of 20453160 is about 273.4765790242.

Adding to 20453160 its reverse (6135402), we get a palindrome (26588562).

The spelling of 20453160 in words is "twenty million, four hundred fifty-three thousand, one hundred sixty".