10220808 has 128 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 2826240.

The previous prime is 10220807. The next prime is 10220827. The reversal of 10220808 is 80802201.

10220808 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3197²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217441 + ... + 217487.

It is an arithmetic number, because the mean of its divisors is an integer number (238140).

Almost surely, 2^10220808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10220808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15240960).

10220808 is an abundant number, since it is smaller than the sum of its proper divisors (20261112).

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

10220808 is a wasteful number, since it uses less digits than its factorization.

10220808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 10220808 is about 3196.9998436034. Note that the first 3 decimals coincide. The cubic root of 10220808 is about 217.0176601539.

It can be divided in two parts, 102 and 20808, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 10220808 in words is "ten million, two hundred twenty thousand, eight hundred eight".