20035220 has 24 divisors (see below), whose sum is σ = 42789600. Its totient is φ = 7877792.

The previous prime is 20035217. The next prime is 20035229. The reversal of 20035220 is 2253002.

It is a junction number, because it is equal to n+sod(n) for n = 20035195 and 20035204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035229) 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, 7310 + ... + 9669.

It is an arithmetic number, because the mean of its divisors is an integer number (1782900).

Almost surely, 2^20035220 is an apocalyptic number.

20035220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20035220 is an abundant number, since it is smaller than the sum of its proper divisors (22754380).

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

20035220 is a wasteful number, since it uses less digits than its factorization.

20035220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17047 (or 17045 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20035220 is about 4476.0719386534. The cubic root of 20035220 is about 271.6010045346.

Adding to 20035220 its reverse (2253002), we get a palindrome (22288222).

The spelling of 20035220 in words is "twenty million, thirty-five thousand, two hundred twenty".