20410920 has 64 divisors (see below), whose sum is σ = 68040000. Its totient is φ = 5442624.

The previous prime is 20410919. The next prime is 20410963. The reversal of 20410920 is 2901402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20410893 and 20410902.

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, 8370 + ... + 10529.

It is an arithmetic number, because the mean of its divisors is an integer number (1063125).

Almost surely, 2^20410920 is an apocalyptic number.

20410920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20410920 is an abundant number, since it is smaller than the sum of its proper divisors (47629080).

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

20410920 is a wasteful number, since it uses less digits than its factorization.

20410920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18919 (or 18909 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20410920 is about 4517.8446188420. The cubic root of 20410920 is about 273.2881874013.

The spelling of 20410920 in words is "twenty million, four hundred ten thousand, nine hundred twenty".