10220728 has 32 divisors (see below), whose sum is σ = 22024800. Its totient is φ = 4355712.

The previous prime is 10220711. The next prime is 10220729. The reversal of 10220728 is 82702201.

It is a junction number, because it is equal to n+sod(n) for n = 10220699 and 10220708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12426 + ... + 13222.

It is an arithmetic number, because the mean of its divisors is an integer number (688275).

Almost surely, 2^10220728 is an apocalyptic number.

It is an amenable number.

10220728 is an abundant number, since it is smaller than the sum of its proper divisors (11804072).

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

10220728 is a wasteful number, since it uses less digits than its factorization.

10220728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 10220728 is about 3196.9873318485. The cubic root of 10220728 is about 217.0170939411.

Adding to 10220728 its reverse (82702201), we get a palindrome (92922929).

The spelling of 10220728 in words is "ten million, two hundred twenty thousand, seven hundred twenty-eight".