10645220 has 12 divisors (see below), whose sum is σ = 22355004. Its totient is φ = 4258080.

The previous prime is 10645207. The next prime is 10645223. The reversal of 10645220 is 2254601.

It is a happy number.

10645220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5410276 + 5234944 = 2326^2 + 2288^2 .

It is a super-2 number, since 2×10645220² = 226641417696800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 532261 = 10645220 / (1 + 0 + 6 + 4 + 5 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 10645192 and 10645201.

It is not an unprimeable number, because it can be changed into a prime (10645223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266111 + ... + 266150.

It is an arithmetic number, because the mean of its divisors is an integer number (1862917).

Almost surely, 2^10645220 is an apocalyptic number.

10645220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10645220 is an abundant number, since it is smaller than the sum of its proper divisors (11709784).

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

10645220 is a wasteful number, since it uses less digits than its factorization.

10645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532270 (or 532268 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 10645220 is about 3262.7013347838. The cubic root of 10645220 is about 219.9808523280.

Adding to 10645220 its reverse (2254601), we get a palindrome (12899821).

The spelling of 10645220 in words is "ten million, six hundred forty-five thousand, two hundred twenty".