20354120 has 32 divisors (see below), whose sum is σ = 46665720. Its totient is φ = 7987200.

The previous prime is 20354119. The next prime is 20354123. The reversal of 20354120 is 2145302.

It can be written as a sum of positive squares in 4 ways, for example, as 19518724 + 835396 = 4418^2 + 914^2 .

It is not an unprimeable number, because it can be changed into a prime (20354123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2681 + ... + 6920.

Almost surely, 2^20354120 is an apocalyptic number.

20354120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20354120 is an abundant number, since it is smaller than the sum of its proper divisors (26311600).

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

20354120 is a wasteful number, since it uses less digits than its factorization.

20354120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665 (or 9661 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20354120 is about 4511.5540559767. The cubic root of 20354120 is about 273.0344475667.

Adding to 20354120 its reverse (2145302), we get a palindrome (22499422).

The spelling of 20354120 in words is "twenty million, three hundred fifty-four thousand, one hundred twenty".