10220918 has 4 divisors (see below), whose sum is σ = 15331380. Its totient is φ = 5110458.

The previous prime is 10220911. The next prime is 10220921. The reversal of 10220918 is 81902201.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 10220893 and 10220902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555228 + ... + 2555231.

It is an arithmetic number, because the mean of its divisors is an integer number (3832845).

Almost surely, 2^10220918 is an apocalyptic number.

10220918 is a deficient number, since it is larger than the sum of its proper divisors (5110462).

10220918 is an equidigital number, since it uses as much as digits as its factorization.

10220918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110461.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 10220918 is about 3197.0170471863. The cubic root of 10220918 is about 217.0184386917.

The spelling of 10220918 in words is "ten million, two hundred twenty thousand, nine hundred eighteen".