20461122 has 48 divisors (see below), whose sum is σ = 50476608. Its totient is φ = 5929440.

The previous prime is 20461093. The next prime is 20461139. The reversal of 20461122 is 22116402.

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 = 20461095 and 20461104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2308 + ... + 6800.

It is an arithmetic number, because the mean of its divisors is an integer number (1051596).

Almost surely, 2^20461122 is an apocalyptic number.

20461122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20461122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25238304).

20461122 is an abundant number, since it is smaller than the sum of its proper divisors (30015486).

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

20461122 is a wasteful number, since it uses less digits than its factorization.

20461122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4532 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20461122 is about 4523.3971746907. The cubic root of 20461122 is about 273.5120607141.

Adding to 20461122 its reverse (22116402), we get a palindrome (42577524).

The spelling of 20461122 in words is "twenty million, four hundred sixty-one thousand, one hundred twenty-two".