20410140 has 24 divisors (see below), whose sum is σ = 57148560. Its totient is φ = 5442688.

The previous prime is 20410139. The next prime is 20410163. The reversal of 20410140 is 4101402.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 170025 + ... + 170144.

It is an arithmetic number, because the mean of its divisors is an integer number (2381190).

Almost surely, 2^20410140 is an apocalyptic number.

20410140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20410140 is an abundant number, since it is smaller than the sum of its proper divisors (36738420).

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

20410140 is a wasteful number, since it uses less digits than its factorization.

20410140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340181 (or 340179 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20410140 is about 4517.7582936673. The cubic root of 20410140 is about 273.2847061357.

Adding to 20410140 its reverse (4101402), we get a palindrome (24511542).

The spelling of 20410140 in words is "twenty million, four hundred ten thousand, one hundred forty".