10220778 has 24 divisors (see below), whose sum is σ = 22249188. Its totient is φ = 3390912.

The previous prime is 10220753. The next prime is 10220797. The reversal of 10220778 is 87702201.

It can be written as a sum of positive squares in 2 ways, for example, as 10093329 + 127449 = 3177^2 + 357^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2976 + ... + 5412.

Almost surely, 2^10220778 is an apocalyptic number.

10220778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10220778 is an abundant number, since it is smaller than the sum of its proper divisors (12028410).

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

10220778 is a wasteful number, since it uses less digits than its factorization.

10220778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678 (or 2675 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 10220778 is about 3196.9951517010. The cubic root of 10220778 is about 217.0174478244.

Adding to 10220778 its reverse (87702201), we get a palindrome (97922979).

The spelling of 10220778 in words is "ten million, two hundred twenty thousand, seven hundred seventy-eight".