20450360 has 32 divisors (see below), whose sum is σ = 52587360. Its totient is φ = 7011456.

The previous prime is 20450357. The next prime is 20450377. The reversal of 20450360 is 6305402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36239 + ... + 36798.

It is an arithmetic number, because the mean of its divisors is an integer number (1643355).

Almost surely, 2^20450360 is an apocalyptic number.

20450360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20450360 is an abundant number, since it is smaller than the sum of its proper divisors (32137000).

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

20450360 is a wasteful number, since it uses less digits than its factorization.

20450360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73055 (or 73051 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20450360 is about 4522.2074255832. The cubic root of 20450360 is about 273.4640989744.

Adding to 20450360 its reverse (6305402), we get a palindrome (26755762).

The spelling of 20450360 in words is "twenty million, four hundred fifty thousand, three hundred sixty".