20240220 has 192 divisors, whose sum is σ = 76317696. Its totient is φ = 3870720.

The previous prime is 20240219. The next prime is 20240257. The reversal of 20240220 is 2204202.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20240196 and 20240205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59892 + ... + 60228.

It is an arithmetic number, because the mean of its divisors is an integer number (397488).

Almost surely, 2^20240220 is an apocalyptic number.

20240220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20240220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38158848).

20240220 is an abundant number, since it is smaller than the sum of its proper divisors (56077476).

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

20240220 is a wasteful number, since it uses less digits than its factorization.

20240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20240220 is about 4498.9132020967. The cubic root of 20240220 is about 272.5242017615.

Adding to 20240220 its reverse (2204202), we get a palindrome (22444422).

The spelling of 20240220 in words is "twenty million, two hundred forty thousand, two hundred twenty".