106720728 has 32 divisors (see below), whose sum is σ = 274014960. Its totient is φ = 34611840.

The previous prime is 106720727. The next prime is 106720729. The reversal of 106720728 is 827027601.

It is an interprime number because it is at equal distance from previous prime (106720727) and next prime (106720729).

It is a super-2 number, since 2×106720728² = 22778627569699968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106720723) 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, 59203 + ... + 60978.

Almost surely, 2^106720728 is an apocalyptic number.

It is an amenable number.

106720728 is an abundant number, since it is smaller than the sum of its proper divisors (167294232).

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

106720728 is a wasteful number, since it uses less digits than its factorization.

106720728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120227 (or 120223 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 106720728 is about 10330.5724913966. The cubic root of 106720728 is about 474.3325480644.

The spelling of 106720728 in words is "one hundred six million, seven hundred twenty thousand, seven hundred twenty-eight".