20455160 has 32 divisors (see below), whose sum is σ = 50209200. Its totient is φ = 7438080.

The previous prime is 20455157. The next prime is 20455163. The reversal of 20455160 is 6155402.

It is an interprime number because it is at equal distance from previous prime (20455157) and next prime (20455163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22805 + ... + 23684.

Almost surely, 2^20455160 is an apocalyptic number.

20455160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20455160 is an abundant number, since it is smaller than the sum of its proper divisors (29754040).

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

20455160 is a wasteful number, since it uses less digits than its factorization.

20455160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46511 (or 46507 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20455160 is about 4522.7381087125. The cubic root of 20455160 is about 273.4854926481.

The spelling of 20455160 in words is "twenty million, four hundred fifty-five thousand, one hundred sixty".