10220812 has 18 divisors (see below), whose sum is σ = 20807052. Its totient is φ = 4380264.

The previous prime is 10220807. The next prime is 10220827. The reversal of 10220812 is 21802201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25878 + ... + 26269.

Almost surely, 2^10220812 is an apocalyptic number.

It is an amenable number.

10220812 is an abundant number, since it is smaller than the sum of its proper divisors (10586240).

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

10220812 is a wasteful number, since it uses less digits than its factorization.

10220812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52165 (or 52156 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 10220812 is about 3197.0004691898. Note that the first 3 decimals coincide. The cubic root of 10220812 is about 217.0176884645.

The spelling of 10220812 in words is "ten million, two hundred twenty thousand, eight hundred twelve".